NCERT Solutions for Class 9 Maths Chapter 7 Triangles Exercise 7.4 Solutions

CBSE X Related Questions

  • 1.
    Two dice are rolled together. The probability of getting an outcome $(x, y)$ where $x \gt y$, is

      • $\frac{5}{12}$
      • $\frac{5}{6}$
      • $1$
      • $0$

    • 2.
      If the zeroes of a polynomial p(x) are $-3$ and 8, then p(x) equals

        • $x^2 + 5x - 4$
        • $(x + 3) (-x + 8)$
        • $a(x^2 + 5x - 24)$
        • $x^2 - 24$

      • 3.
        Prove that: $\frac{\tan \theta}{1 - \cot \theta} + \frac{\cot \theta}{1 - \tan \theta} = 1 + \tan \theta + \cot \theta$


          • 4.
            Prove that $14 - 2\sqrt{3}$ is an irrational number, given that $\sqrt{3}$ is irrational.


              • 5.
                Two water taps together can fill a tank in $8\frac{8}{9}$ hours. The tap of larger diameter takes 4 hours less than the smaller one to fill the tank separately. Find the time in which each tap can separately fill the tank.


                  • 6.
                    The value of p for which roots of the quadratic equation $x^2 - px + 6 = 0$ are rational, is

                      • $1$
                      • $-5$
                      • $25$
                      • $\sqrt{5}$

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