NCERT Handwritten Notes Class 11 Maths Chapter 3 Trigonometric Functions

These class 11 maths handwritten notes chapter 3 trigonometric functions have been carefully prepared for quick, one-shot revision before your CBSE Boards, JEE Main, JEE Advanced and CUET exams. Every page is written by hand with boxed formulas and clear unit-circle diagrams, according to the latest 2026-27 CBSE syllabus.

Trigonometric Functions is one of the heaviest scoring chapters of Class 11 Maths and the base for calculus, waves and complex numbers. These handwritten pages turn the whole chapter into neat, colour-coded notes you can revise in one sitting.

• Boxed formulas for identities, sum and difference angles, ready to copy onto the answer sheet.
• Hand-drawn unit circle and ASTC sign chart, so the sign of each ratio is clear at a glance.
• Pairs with the NCERT Solutions, Notes and Book PDF linked lower on this page.

What the Trigonometric Functions Handwritten Notes Cover

The notes open with angle measure: how to switch between degrees and radians. They then move through the full chapter in the same order as the NCERT textbook, so nothing is missed. Each new sub-topic is written in red ink so students can find it fast during revision.

• Angle measure: degree and radian systems, with the link π radian = 180°.
• Trigonometric functions: the six ratios on the unit circle and their domain and range.
• Sign and value tables: the ASTC rule and standard angle values from 0° to 360°.
• Formulas: identities, sum and difference formulas, and the general solution of trig equations.

Because these class 11 maths handwritten notes chapter 3 trigonometric functions keep every formula inside a box, the eye jumps straight to the point. This makes them ideal for a last, fast recap the night before a test.

Key Formulas and Diagrams in the Trigonometric Functions Notes

The core of the chapter is a small set of formulas and the unit-circle diagram that ties them together. The notes keep these on one page so students can revise both at once. The table below lists the formulas the pages box in colour.

The unit circle sits beside the table with each quadrant marked. The ASTC rule shows All, Sine, Tangent and Cosine positive in the four quadrants, so students never lose a sign. Seeing the circle is what makes these formulas easy to recall in the exam.

How to Use These Handwritten Notes for Revision

Handwritten notes work best as a final layer of revision, not as your first read. The plan below helps students get the most out of the Trigonometric Functions handwritten notes in the run-up to the exam. Follow it once a week and again the day before the test.

• First pass: read the pages once, following the degree-to-equations order.
• Active recall: cover each boxed identity and write it from memory.
• Draw it: redraw the unit circle and mark the sign of each ratio yourself.
• Self-test: solve two sums using the sum and difference formulas to lock them in.

Because the class 11 maths handwritten notes chapter 3 trigonometric functions come as a downloadable PDF, students can save them on a phone and revise offline on the way to the exam centre. Pair these pages with the full NCERT Solutions to check your written steps against model answers.

Student Feedback on the Trigonometric Functions Handwritten Notes

Other Trigonometric Functions Class 11 Maths Resources

These handwritten notes are a revision layer. To prepare fully, students should use them with the other resources for the same chapter, all linked in the table below. Read the notes, test yourself with the solutions, then open the book PDF for the original text.

Tip: revise the unit circle first, then write the sum and difference formulas once from memory. That single link fixes most identity sums.

All Class 11 Maths Handwritten Notes by Chapter

The table links the handwritten notes for every chapter of Class 11 Maths, so students can move across the course in one click. Trigonometric Functions is highlighted.

FAQs on Trigonometric Functions Handwritten Notes