Bihar Board Class 10 Mathematics Question Paper 2025 (Code 110 Set-H) Available- Download Here with Solution PDF

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Shivam Yadav

Updated on - Nov 24, 2025

Bihar Board Class 10 Mathematics Question Paper 2025 PDF (Code 110 Set-H) is available for download here. The Mathematics exam was conducted on February 18, 2025 in the Morning Shift from 9:30 AM to 12:15 PM and in the Evening Shift from 2:00 PM to 5:15 PM. The total marks for the theory paper are 100. Students reported the paper to be easy to moderate.

Bihar Board Class 10 Mathematics Question Paper 2025 (Code 110 Set-H) with Solutions

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Bihar Board Class 10 Mathematics 2025 Question Paper with Solutions

Question 1:

Which of the following quadratic polynomials has zeros 3 and -10?

  • (A) \(x^2 + 7x - 30\)
  • (B) \(x^2 - 7x - 30\)
  • (C) \(x^2 + 7x + 30\)
  • (D) \(x^2 - 7x + 30\)

Question 2:

If the sum of zeros of a quadratic polynomial is 3 and their product is -2, then the quadratic polynomial is:

  • (A) \(x^2 - 3x - 2\)
  • (B) \(x^2 - 3x + 3\)
  • (C) \(x^2 - 2x + 3\)
  • (D) \(x^2 + 3x - 2\)

Question 3:

If \( p(x) = x^4 - 2x^3 + 17x^2 - 4x + 30 \) is divided by \( q(x) = x + 2 \), then the degree of the quotient is:

  • (A) 6
  • (B) 3
  • (C) 4
  • (D) 5

Question 4:

How many solutions will \( x + 2y + 3 = 0 \), \( 3x + 6y + 9 = 0 \) have?

  • (A) One solution
  • (B) No solution
  • (C) Infinitely many solutions
  • (D) None of these

Question 5:

If the graphs of two linear equations are parallel, then the number of solutions will be:

  • (A) 1
  • (B) 2
  • (C) Infinitely many
  • (D) None of these

Question 6:

The pair of linear equations \( 5x - 4y + 8 = 0 \) and \( 7x + 6y - 9 = 0 \) is:

  • (A) consistent
  • (B) inconsistent
  • (C) dependent
  • (D) none of these

Question 7:

If \( \alpha \) and \( \beta \) are roots of the quadratic equation \( 3x^2 - 5x + 2 = 0 \), then the value of \( \alpha^2 + \beta^2 \) is:

  • (A) \( \frac{13}{9} \)
  • (B) \( \frac{9}{13} \)
  • (C) \( \frac{5}{3} \)
  • (D) \( \frac{3}{5} \)

Question 8:

If one root of the quadratic equation \( 2x^2 - 7x - p = 0 \) is 2, then the value of \( p \) is:

  • (A) 4
  • (B) -4
  • (C) -6
  • (D) 6

Question 9:

If one root of the quadratic equation \( 2x^2 - x - 6 = 0 \) is \( -\frac{3}{2} \), then its other root is:

  • (A) -2
  • (B) 2
  • (C) \( \frac{3}{2} \)
  • (D) 3

Question 10:

What is the nature of the roots of the quadratic equation \( 2x^2 - 6x + 3 = 0 \)?

  • (A) Real and unequal
  • (B) Real and equal
  • (C) Not real
  • (D) None of these

Question 11:

If the 5th term of an A.P. is 11 and the common difference is 2, then what is its first term?

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4

Question 12:

The sum of an A.P. with \( n \) terms is \( n^2 + 2n + 1 \). Then its 6th term is:

  • (A) 29
  • (B) 19
  • (C) 15
  • (D) None of these

Question 13:

Which of the following is in an A.P.?

  • (A) \( 1, 7, 9, 16, \dots \)
  • (B) \( x, 2x, 3x, 4x, \dots \)
  • (C) \( 2^2, 4^2, 6^2, 8^2, \dots \)
  • (D) \( 2^2, 4^2, 6^2, 8^2, \dots \)

Question 14:

Which of the following is not in an A.P.?

  • (A) 1, 2, 3, 4, ...
  • (B) 3, 6, 9, 12, ...
  • (C) 2, 4, 6, 8, ...
  • (D) \( 2^2, 4^2, 6^2, 8^2, \dots \)

Question 15:

The sum of the first 20 terms of the A.P. \( 1, 4, 7, 10, \dots \) is:

  • (A) 500
  • (B) 540
  • (C) 590
  • (D) 690

Question 16:

Which of the following values is equal to 1?

  • (A) \( \sin^2 60^\circ + \cos^2 60^\circ \)
  • (B) \( \sin 90^\circ \times \cos 90^\circ \)
  • (C) \( \sin^2 60^\circ \)
  • (D) \( \sin 45^\circ \times \frac{1}{\cos 45^\circ} \)

Question 17:

\( \cos^2 A (1 + \tan^2 A) = \)

  • (A) \( \sin^2 A \)
  • (B) \( \csc^2 A \)
  • (C) 1
  • (D) \( \tan^2 A \)

Question 18:

\( \tan 30^\circ = \)

  • (A) \( \sqrt{3} \)
  • (B) \( \frac{\sqrt{3}}{2} \)
  • (C) \( \frac{1}{\sqrt{3}} \)
  • (D) 1

Question 19:

\( \cos 60^\circ = \)

  • (A) \( \frac{1}{2} \)
  • (B) \( \frac{\sqrt{3}}{2} \)
  • (C) \( \frac{1}{\sqrt{2}} \)
  • (D) 1

Question 20:

\( \sin^2 90^\circ - \tan^2 45^\circ = \)

  • (A) 1
  • (B) \( \frac{1}{2} \)
  • (C) \( \frac{1}{\sqrt{2}} \)
  • (D) 0

Question 21:

The distance between the points \( (8 \sin 60^\circ, 0) \) and \( (0, 8 \cos 60^\circ) \) is:

  • (A) 8
  • (B) 25
  • (C) 64
  • (D) \( \frac{1}{8} \)

Question 22:

If \( O(0,0) \) is the origin and the co-ordinates of the point \( P \) are \( (x, y) \), then the distance \( OP \) is:

  • (A) \( \sqrt{x^2 - y^2} \)
  • (B) \( \sqrt{x^2 + y^2} \)
  • (C) \( x^2 - y^2 \)
  • (D) none of these

Question 23:

The distance of the point \( (12, 14) \) from the y-axis is:

  • (A) 12
  • (B) 14
  • (C) 13
  • (D) 15

Question 24:

The ordinate of the point \( (-6, -8) \) is:

  • (A) -6
  • (B) -8
  • (C) 6
  • (D) 8

Question 25:

In which quadrant does the point \( (3, -4) \) lie?

  • (A) First
  • (B) Second
  • (C) Third
  • (D) Fourth

Question 26:

Which of the following points lies in the second quadrant?

  • (A) \( (3, 2) \)
  • (B) \( (-3, 2) \)
  • (C) \( (3, -2) \)
  • (D) \( (-3, -2) \)

Question 27:

The co-ordinates of the mid-point of the line segment joining the points \( (4, -4) \) and \( (-4, 4) \) are:

  • (A) \( (4, 4) \)
  • (B) \( (0, 0) \)
  • (C) \( (0, -4) \)
  • (D) \( (-4, 0) \)

Question 28:

The mid-point of line segment \( AB \) is \( (2, 4) \) and the co-ordinates of point A are \( (5, 7) \), then the co-ordinates of point B are:

  • (A) \( (2, -2) \)
  • (B) \( (1, -1) \)
  • (C) \( (-2, -2) \)
  • (D) \( (-1, -1) \)

Question 29:

The co-ordinates of the ends of a diameter of a circle are \( (10, -6) \) and \( (-6, 10) \). Then the co-ordinates of the centre of the circle are:

  • (A) \( (-2, -2) \)
  • (B) \( (2, 2) \)
  • (C) \( (-2, 2) \)
  • (D) \( (2, -2) \)

Question 30:

The co-ordinates of the vertices of a triangle are \( (4, 6), (0, 4) \), and \( (5, 5) \), then the co-ordinates of the centroid of the triangle are:

  • (A) \( (5, 3) \)
  • (B) \( (3, 4) \)
  • (C) \( (4, 4) \)
  • (D) \( (3, 5) \)

Question 31:

Which of the following fractions has terminating decimal expansion?

  • (A) \(\frac{14}{2^0 \times 3^2}\)
  • (B) \(\frac{9}{5^1 \times 7^2}\)
  • (C) \(\frac{8}{2^2 \times 3^2}\)
  • (D) \(\frac{15}{2^2 \times 5^3}\)

Question 32:

In the form of \( \frac{p}{2^n \times 5^m} \), 0.505 can be written as:

  • (A) \( \frac{101}{2^1 \times 5^2} \)
  • (B) \( \frac{101}{2^1 \times 5^3} \)
  • (C) \( \frac{101}{2^2 \times 5^2} \)
  • (D) \( \frac{101}{2^3 \times 5^2} \)

Question 33:

If in the division algorithm \( a = bq + r \), \( b = 4 \), \( q = 5 \) and \( r = 1 \), then what is the value of \( a \)?

  • (A) 20
  • (B) 21
  • (C) 25
  • (D) 31

Question 34:

The zeroes of the polynomial \( 2x^2 - 4x - 6 \) are:

  • (A) 1, 3
  • (B) -1, 3
  • (C) 1, -3
  • (D) -1, -3

Question 35:

The degree of the polynomial \( (x^3 + x^2 + 2x + 1)(x^2 + 2x + 1) \) is:

  • (A) 3
  • (B) 4
  • (C) 5
  • (D) 6

Question 36:

Which of the following is not a polynomial?

  • (A) \( x^2 - 7 \)
  • (B) \( 2x^2 + 7x + 6 \)
  • (C) \( \frac{1}{2} x^2 + \frac{1}{2} x + 4 \)
  • (D) \( \frac{x + 4}{x} \)

Question 37:

Which of the following quadratic polynomials has zeroes 2 and -2?

  • (A) \( x^2 + 4 \)
  • (B) \( x^2 - 4 \)
  • (C) \( x^2 - 2x + 4 \)
  • (D) \( x^2 + \sqrt{8} \)

Question 38:

If \( \alpha \) and \( \beta \) are the zeroes of the polynomial \( x^2 + 7x + 10 \), then the value of \( \alpha + \beta \) is:

  • (A) 7
  • (B) 10
  • (C) -7
  • (D) -10

Question 39:

\( (\sin 30^\circ + \cos 30^\circ) - (\sin 60^\circ + \cos 60^\circ) \) =

  • (A) -1
  • (B) 0
  • (C) 1
  • (D) 2

Question 40:

If one zero of the quadratic polynomial \( (k-1)x^2 + kx + 1 \) is -4, then the value of \( k \) is:

  • (A) \( \frac{5}{4} \)
  • (B) \( \frac{5}{4} \)
  • (C) \( \frac{4}{3} \)
  • (D) \( \frac{4}{3} \)

Question 41:

From an external point \( P \), two tangents \( PA \) and \( PB \) are drawn on a circle. If \( PA = 8 \, cm \), then \( PB = \).

  • (A) 6 cm
  • (B) 8 cm
  • (C) 12 cm
  • (D) 16 cm

Question 42:

If \( PA \) and \( PB \) are the tangents drawn from an external point \( P \) to a circle with centre at \( O \) and \( \angle APB = 80^\circ \), then \( \angle POA = \).

  • (A) 40°
  • (B) 50°
  • (C) 80°
  • (D) 60°

Question 43:

What is the angle between the tangent drawn at any point of a circle and the radius passing through the point of contact?

  • (A) 30°
  • (B) 45°
  • (C) 60°
  • (D) 90°

Question 44:

The ratio of the radii of two circles is 3 : 4; then the ratio of their areas is:

  • (A) 3 : 4
  • (B) 4 : 3
  • (C) 9 : 16
  • (D) 16 : 9

Question 45:

The area of the sector of a circle of radius 42 cm and central angle 30° is:

  • (A) 515 cm\(^2\)
  • (B) 416 cm\(^2\)
  • (C) 462 cm\(^2\)
  • (D) 406 cm\(^2\)

Question 46:

The ratio of the circumferences of two circles is 5 : 7; then the ratio of their radii is:

  • (A) 7 : 5
  • (B) 5 : 7
  • (C) 25 : 49
  • (D) 49 : 25

Question 47:

\( 7 \sec^2 A - 7 \tan^2 A = \)

  • (A) 49
  • (B) 7
  • (C) 14
  • (D) 0

Question 48:

If \( x = a \cos \theta \) and \( y = b \sin \theta \), then \( b^2 x^2 + a^2 y^2 = \)

  • (A) \( a^2 b^2 \)
  • (B) \( ab \)
  • (C) \( a^4 b^4 \)
  • (D) \( a^2 + b^2 \)

Question 49:

The angle of elevation of the top of a tower at a distance of 10 m from its base is \( 60^\circ \); then the height of the tower is:

  • (A) 10 m
  • (B) \( 10\sqrt{3} \) m
  • (C) \( 15\sqrt{3} \) m
  • (D) \( 20/\sqrt{3} \) m

Question 50:

A kite is at a height of 30 m from the earth and its string makes an angle of 60° with the earth. Then the length of the string is:

  • (A) \( 30/\sqrt{2} \) m
  • (B) \( 35/\sqrt{3} \) m
  • (C) \( 20/\sqrt{3} \) m
  • (D) \( 45/\sqrt{2} \) m

Question 51:

If \( A(0,1) \), \( B(0,5) \), and \( C(3,4) \) are the vertices of any triangle ABC, then the area of triangle ABC is:

  • (A) 16
  • (B) 12
  • (C) 6
  • (D) 4

Question 52:

\( \tan 10^\circ \times \tan 23^\circ \times \tan 80^\circ \times \tan 67^\circ = \)

  • (A) 1
  • (B) \( \sqrt{3} \)
  • (C) \( 1/\sqrt{3} \)
  • (D) \( \sqrt{3}/3 \)

Question 53:

If the ratio of areas of two similar triangles is 100:144, then the ratio of their corresponding sides is:

  • (A) \( 10 : 8 \)
  • (B) \( 12 : 10 \)
  • (C) \( 10 : 12 \)
  • (D) \( 10 : 13 \)

Question 54:

A line which intersects a circle in two distinct points is called:

  • (A) Chord
  • (B) Secant
  • (C) Tangent
  • (D) None of these

Question 55:

The corresponding sides of two similar triangles are in the ratio \( 4:9 \). What will be the ratio of the areas of the triangles?

  • (A) \( 9 : 4 \)
  • (B) \( 16 : 81 \)
  • (C) \( 81 : 16 \)
  • (D) \( 2 : 3 \)

Question 56:

If \( \triangle ABC \sim \triangle DEF \) where \( BC = 3 \, cm \), \( EF = 4 \, cm \) and the area of \( \triangle ABC \) is 54 \( cm^2 \), then the area of \( \triangle DEF \) is:

  • (A) 56 \( cm^2 \)
  • (B) 96 \( cm^2 \)
  • (C) 196 \( cm^2 \)
  • (D) 49 \( cm^2 \)

Question 57:

In any \( \triangle ABC \), \( \angle A = 90^\circ \), \( BC = 13 \, cm \), and \( AB = 12 \, cm \). Then the value of \( AC \) is:

  • (A) 3 cm
  • (B) 4 cm
  • (C) 5 cm
  • (D) 6 cm

Question 58:

In \( \triangle DEF \) and \( \triangle PQR \), if \( \angle D = \angle L \) and \( \angle R = \angle E \), then which of the following is correct?

  • (A) \( \angle F = \angle P \)
  • (B) \( \angle F = \angle Q \)
  • (C) \( \angle D = \angle P \)
  • (D) \( \angle E = \angle P \)

Question 59:

In \( \triangle ABC \) and \( \triangle DEF \), if \( AB = BC = \frac{CA}{DF} = 80^\circ \), then the measure of \( \angle F \) is:

  • (A) 30°
  • (B) 45°
  • (C) 60°
  • (D) 40°

Question 60:

The number of common tangents of two intersecting circles is:

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) infinitely many

Question 61:

The length of the class intervals of the classes \( 2 - 5, 5 - 8, 8 - 11, \dots \) is:

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 3.5

Question 62:

If the mean of four consecutive odd numbers is 6, then the largest number is:

  • (A) 4.5
  • (B) 9
  • (C) 21
  • (D) 15

Question 63:

The mean of first 6 even natural numbers is:

  • (A) 4
  • (B) 6
  • (C) 7
  • (D) none of these

Question 64:

\( 1 + \cot^2 \theta = \)

  • (A) \( \sin^2 \theta \)
  • (B) \( \csc^2 \theta \)
  • (C) \( \tan^2 \theta \)
  • (D) \( \sec^2 \theta \)

Question 65:

The mode of \(8, 7, 9, 3, 9, 5, 4, 5, 7, 5\) is

  • (A) 5
  • (B) 7
  • (C) 8
  • (D) 9

Question 66:

If \( P(E) = 0.02 \), then \( P(E') \) is equal to

  • (A) 0.02
  • (B) 0.002
  • (C) 0.98
  • (D) 0.97

Question 67:

Two dice are thrown at the same time. What is the probability that the difference of the numbers appearing on top is zero?

  • (A) \(\tfrac{1}{36}\)
  • (B) \(\tfrac{1}{6}\)
  • (C) \(\tfrac{5}{18}\)
  • (D) \(\tfrac{5}{36}\)

Question 68:

The probability of getting heads on both the coins in throwing two coins is

  • (A) \(\tfrac{1}{2}\)
  • (B) \(\tfrac{1}{3}\)
  • (C) \(\tfrac{1}{4}\)
  • (D) \(1\)

Question 69:

A month is selected at random in a year. The probability of it being June or September is

  • (A) \(\tfrac{3}{4}\)
  • (B) \(\tfrac{1}{12}\)
  • (C) \(\tfrac{1}{6}\)
  • (D) \(\tfrac{1}{4}\)

Question 70:

The probability of getting a number 4 or 5 in throwing a die is

  • (A) \(\tfrac{1}{2}\)
  • (B) \(\tfrac{1}{3}\)
  • (C) \(\tfrac{1}{6}\)
  • (D) \(\tfrac{2}{3}\)

Question 71:

The ratio of the volumes of two spheres is \(64 : 125\). Then the ratio of their surface areas is

  • (A) 25 : 8
  • (B) 25 : 16
  • (C) 16 : 25
  • (D) None of these

Question 72:

The radii of two cylinders are in the ratio \(4 : 5\) and their heights are in the ratio \(6 : 7\). Then the ratio of their volumes is

  • (A) 96 : 125
  • (B) 96 : 175
  • (C) 175 : 96
  • (D) 20 : 63

Question 73:

What is the total surface area of a hemisphere of radius \(R\)?

  • (A) \(\pi R^2\)
  • (B) \(2\pi R^2\)
  • (C) \(3\pi R^2\)
  • (D) \(4\pi R^2\)

Question 74:

If the curved surface area of a cone is \(880 \ cm^2\) and its radius is \(14 \ cm\), then its slant height is

  • (A) 10 cm
  • (B) 20 cm
  • (C) 40 cm
  • (D) 30 cm

Question 75:

If the length of the diagonal of a cube is \(2\sqrt{3} \ cm\), then the length of its edge is

  • (A) 2 cm
  • (B) \(2\sqrt{3}\) cm
  • (C) 3 cm
  • (D) 4 cm

Question 76:

If the edge of a cube is doubled then the total surface area will become how many times of the previous total surface area?

  • (A) Two times
  • (B) Four times
  • (C) Six times
  • (D) Twelve times

Question 77:

The ratio of the total surface area of a sphere and that of a hemisphere having the same radius is

  • (A) 2 : 1
  • (B) 4 : 9
  • (C) 3 : 2
  • (D) 4 : 3

Question 78:

If the curved surface area of a hemisphere is \(1232 \ cm^2\), then its radius is

  • (A) 7 cm
  • (B) 14 cm
  • (C) 21 cm
  • (D) 28 cm

Question 79:

If \(\cos^2\theta + \cos^2\theta = 1\) then the value of \(\sin^2\theta + \sin^4\theta\) is

  • (A) -1
  • (B) 1
  • (C) 0
  • (D) 2

Question 80:

\[ \frac{1 + \tan^2 A}{1 + \cot^2 A} = \]

  • (A) \(\sec^2 A\)
  • (B) -1
  • (C) \(\cot^2 A\)
  • (D) \(\tan^2 A\)

Question 81:

For what value of \( k \), roots of the quadratic equation \( kx^2 - 6x + 1 = 0 \) are real and equal?

  • (A) 6
  • (B) 8
  • (C) 9
  • (D) 10

Question 82:

If one of the zeros of the polynomial \( p(x) \) is 2, then which of the following is a factor of \( p(x) \)?

  • (A) \( x - 2 \)
  • (B) \( x + 2 \)
  • (C) \( x - 1 \)
  • (D) \( x + 1 \)

Question 83:

If \( \alpha \) and \( \beta \) are the zeros of the polynomial \( ax^2 + bx + c \), then the value of \( \alpha \times \beta \) is:

  • (A) \( \frac{a}{c} \)
  • (B) \( \frac{-a}{c} \)
  • (C) \( \frac{b}{c} \)
  • (D) \( \frac{-b}{c} \)

Question 84:

Which of the following is a quadratic equation?

  • (A) \( (x + 3)(x - 3) = x^2 - 4x^3 \)
  • (B) \( (x + 3)^2 = 4(x + 4) \)
  • (C) \( (2x - 2)^2 = 4x^2 + 7 \)
  • (D) \( 4x + \frac{1}{4x} = 4x \)

Question 85:

Which of the following is not a quadratic equation?

  • (A) \( 5x^2 - x^2 + 3 \)
  • (B) \( x^3 - x^2 = (x - 1)^3 \)
  • (C) \( (x + 3)^2 = 3(x^2 - 5) \)
  • (D) \( \sqrt{2x + 3}^2 = 2x^2 + 5 \)

Question 86:

The discriminant of the quadratic equation \( 2x^2 - 7x + 6 = 0 \) is:

  • (A) 1
  • (B) -1
  • (C) 27
  • (D) 37

Question 87:

Which of the following points lies on the graph of \( x = 2 \)?

  • (A) \( (2, 0) \)
  • (B) \( (2, 1) \)
  • (C) \( (2, 2) \)
  • (D) all of these

Question 88:

If \( P + 1, 2P + 1, 4P - 1 \) are in A.P., then the value of \( P \) is:

  • (A) 1
  • (B) 2
  • (C) 4
  • (D) 4

Question 89:

The common difference of the arithmetic progression \( 1, 5, 9, \dots \) is:

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 5

Question 90:

Which term of the A.P. \( 5, 8, 11, 14, \dots \) is 38?

  • (A) 10th
  • (B) 11th
  • (C) 12th
  • (D) 13th

Question 91:

\( \sin(90^\circ - A) = \)

  • (A) \( \sin A \)
  • (B) \( \cos A \)
  • (C) \( \tan A \)
  • (D) \( \sec A \)

Question 92:

If \( \alpha = \beta = 60^\circ \), then the value of \( \cos(\alpha - \beta) \) is:

  • (A) \( \frac{1}{2} \)
  • (B) 1
  • (C) 0
  • (D) 2

Question 93:

If \( \theta = 45^\circ \), then the value of \( \sin \theta + \cos \theta \) is:

  • (A) \( \frac{1}{\sqrt{2}} \)
  • (B) \( \sqrt{2} \)
  • (C) \( \frac{1}{2} \)
  • (D) 1

Question 94:

If \( A = 30^\circ \), then the value of \( \frac{2 \tan A}{1 - \tan^2 A} \) is:

  • (A) \( 2 \tan 30^\circ \)
  • (B) \( \tan 60^\circ \)
  • (C) \( 2 \tan 60^\circ \)
  • (D) \( \tan 30^\circ \)

Question 95:

If \( \tan \theta = \frac{12}{5} \), then the value of \( \sin \theta \) is:

  • (A) \( \frac{5}{12} \)
  • (B) \( \frac{12}{13} \)
  • (C) \( \frac{5}{13} \)
  • (D) \( \frac{12}{5} \)

Question 96:

\[ \frac{\cos 59^\circ \times \tan 80^\circ}{\sin 31^\circ \times \cot 10^\circ} = \]

  • (A) \( \frac{1}{\sqrt{2}} \)
  • (B) 1
  • (C) \( \frac{\sqrt{3}}{2} \)
  • (D) \( \frac{1}{2} \)

Question 97:

If \( \tan 25^\circ \times \tan 65^\circ = \sin A \), then the value of \( A \) is:

  • (A) 25°
  • (B) 65°
  • (C) 90°
  • (D) 45°

Question 98:

If \( \cos \theta = x \), then \( \tan \theta = \):

  • (A) \( \frac{\sqrt{1 + x^2}}{x} \)
  • (B) \( \frac{\sqrt{1 - x^2}}{x} \)
  • (C) \( \sqrt{1 - x^2} \)
  • (D) \( \frac{x}{\sqrt{1 - x^2}} \)

Question 99:

\( 1 - \cos^2 \theta = \):

  • (A) \( \cos^2 \theta (1 - \cos^2 \theta) \)
  • (B) \( \sin^2 \theta (1 + \cos^2 \theta) \)
  • (C) \( \sin^2 \theta (1 - \sin^2 \theta) \)
  • (D) \( \sin^2 \theta (1 + \sin^2 \theta) \)

Question 100:

What is the form of a point lying on the y-axis?

  • (A) \( (y, 0) \)
  • (B) \( (2, y) \)
  • (C) \( (0, x) \)
  • (D) None of these

Question 101:

A ladder 7 m long makes an angle of 30° with the wall. Find the height of the point on the wall where the ladder touches the wall.


Question 102:

\( E \) is a point on the extended part of the side \( AD \) of a parallelogram \( ABCD \), and \( BE \) intersects \( CD \) at \( F \); then prove that \( \triangle ABE \sim \triangle CFB \).


Question 103:

ABC is an isosceles right triangle with \( \angle C \) as a right angle. Prove that \( AB^2 = 2AC^2 \).


Question 104:

E is a point on side \( CB \) produced of an isosceles triangle \( ABC \) with \( AB = AC \). If \( AD \perp BC \) and \( EF \perp AC \), prove that \( \triangle ABD \sim \triangle ECF \).


Question 105:

Sides \( AB \) and \( BC \) and median \( AD \) of triangle \( ABC \) are respectively proportional to sides \( PQ \) and \( PR \) and median \( PM \) of another triangle \( PQR \). Then prove that \( \triangle ABC \sim \triangle PQR \).


Question 106:

If \( \triangle ABC \sim \triangle DEF \) and their areas are \( 9 \, cm^2 \) and \( 64 \, cm^2 \) respectively. If \( DE = 5.1 \, cm \), then find \( AB \).


Question 107:

Divide \( x^3 + 1 \) by \( x + 1 \).


Question 108:

Using Euclid's division algorithm, find the H.C.F. of 504 and 1188.


Question 109:

Find the discriminant of the quadratic equation \( 2x^2 + 5x - 3 = 0 \) and find the nature of the roots also.


Question 110:

Find the co-ordinates of the point which divides line segment joining the points \( (-1, 7) \) and \( (4, -3) \) in the ratio \( 2:3 \) internally.


Question 111:

Find the area of the triangle whose vertices are \( (-5, -1) \), \( (3, -5) \), and \( (5, 2) \).


Question 112:

The diagonal of a cube is \( \frac{9}{\sqrt{3}} \). Find the total surface area of the cube.


Question 113:

Prove that \( \sqrt{5} - \sqrt{3} \) is an irrational number.


Question 114:

For what value of \( k \) are the points \( (1, 1) \), \( (3, k) \), and \( (-1, 4) \) collinear?


Question 115:

Find such a point on the y-axis which is equidistant from the points \( (6, 5) \) and \( (-4, 3) \).


Question 116:

If \( \tan \theta = \frac{5}{12} \), then find the value of \( \sin \theta + \cos \theta \).


Question 117:

If \( \sin 3A = \cos(A - 26^\circ) \), where \( 3A \) is an acute angle, then find the value of \( A \).


Question 118:

The sum of two numbers is 50 and one number is \( \frac{7}{3} \) times of the other; then find the numbers.


Question 119:

If the radius of the base of a cone is 7 cm and its height is 24 cm then find its curved surface area.


Question 120:

The length of the minute hand for a clock is 7 cm. Find the area swept by it in 40 minutes.


Question 121:

If \( \tan 7^\circ \times \tan 60^\circ \times \tan 83^\circ = \sqrt{3} \), prove that \( \tan 7^\circ \times \tan 60^\circ \times \tan 83^\circ = \sqrt{3} \).


Question 122:

Find two consecutive positive integers, the sum of whose squares is 365.


Question 123:

The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Write the equation for this statement.


Question 124:

In a triangle \( PQR \), two points \( S \) and \( T \) are on the sides \( PQ \) and \( PR \) respectively such that \( \frac{PS}{SQ} = \frac{PT}{TR} \) and \( \angle PST = \angle PRQ \), then prove that \( \triangle PQR \) is an isosceles triangle.


Question 125:

Using the quadratic formula, find the roots of the equation \( 2x^2 - 2\sqrt{2}x + 1 = 0 \).


Question 126:

Find the sum of \( 3 + 11 + 19 + \dots + 67 \).


Question 127:

If 5th and 9th terms of an A.P. are 43 and 79 respectively, find the A.P.


Question 128:

Prove that: \[ \frac{1 + \cos \theta}{\sqrt{1 - \cos^2 \theta}} = \sin \theta \]


Question 129:

Prove that: \[ \tan 9^\circ \times \tan 27^\circ = \cot 63^\circ \times \cot 81^\circ \]


Question 130:

If \( \cos A = \frac{4}{5} \), then find the values of \( \cot A \) and \( \csc A \).


Question 131:

Draw the graphs of the pair of linear equations \( x + 3y - 6 = 0 \) and \( 2x - 3y - 12 = 0 \) and solve them.


Question 132:

If one angle of a triangle is equal to one angle of the other triangle and the sides included between these angles are proportional, then prove that the triangles are similar.


Question 133:

A two-digit number is four times the sum of its digits and twice the product of its digits. Find the number.


Question 134:

Draw a line segment of length 7.6 cm and divide it in the ratio 5:8. Measure both parts.


Question 135:

Prove that \[ \frac{\sec \theta - \tan \theta}{\sec \theta + \tan \theta} = 1 + 2 \tan^2 \theta - 2 \sec \theta \cdot \tan \theta \]


Question 136:

The radii of two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has circumference equal to the sum of the circumferences of the two circles.


Question 137:

Find the mean of the following distribution:


Question 138:

The slant height of a frustum of a cone is 4 cm and the perimeters (circumferences) of its circular ends are 18 cm and 6 cm. Find the curved surface area of the frustum.

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