Class 11 Mathematics — Chapter 3: Trigonometric Functions
66 practice questions · 22 Easy · 22 Medium · 22 Hard
Practise Class 11 Mathematics Chapter 3, "Trigonometric Functions", with 66 NCERT-aligned multiple-choice questions. The set is split into 22 Easy, 22 Medium and 22 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams, JEE Main and JEE Advanced.
"Trigonometric Functions" is one of the chapters where problem-solving speed, formula recall and step-by-step reasoning really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Trigonometric Functions, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 11 Mathematics mastery score. A few sample questions are shown below; sign in free to practise all 66.
Key concepts: Trigonometric Functions (Class 11 Mathematics)
This chapter extends trigonometry to any angle using radians, develops the trigonometric identities and compound-angle formulae, and solves trigonometric equations.
- Radian measure
- Angles measured in radians; π radians = 180°, and arc length l = rθ.
- Signs in quadrants
- The ASTC rule: All, Sine, Tangent, Cosine are positive in quadrants I, II, III, IV respectively.
- Compound-angle formulae
- sin(A±B), cos(A±B), tan(A±B), plus double- and half-angle and product-to-sum formulae.
- General solutions
- Trigonometric equations have infinitely many solutions, written using the general-solution formulae.
- Identities
- Built on the fundamental identity sin²θ + cos²θ = 1 and its variants.
Key formulas — Trigonometric Functions
💡 Exam tips for Trigonometric Functions
- Use the ASTC rule to fix the sign before computing any trigonometric ratio.
- Memorise the general-solution forms for sin, cos and tan — they're asked directly.
Sample questions
sin 30° =
Standard value.
sin 2θ =
Double-angle formula.
sin(A+B) =
Angle addition formula.
Trigonometric Functions — FAQs
What are the key concepts in Class 11 Mathematics Trigonometric Functions?+
This chapter extends trigonometry to any angle using radians, develops the trigonometric identities and compound-angle formulae, and solves trigonometric equations. Key ideas include Radian measure, Signs in quadrants, Compound-angle formulae, General solutions, Identities.
What does Class 11 Mathematics Chapter 3 (Trigonometric Functions) cover on XamBaaz?+
It covers 66 NCERT-aligned MCQs on "Trigonometric Functions" — 22 Easy, 22 Medium and 22 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams, JEE Main and JEE Advanced.
Are these "Trigonometric Functions" questions free to practise?+
Yes — sign in with Google to practise "Trigonometric Functions" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Trigonometric Functions" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
Practise all 66 questions free
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