# Class 11 Mathematics Chapter 3: Trignometric Functions - NCERT Solutions

This page focuses on the complete NCERT solutions for Class 11 Mathematics Chapter 3: Trignometric Functions. This section provides detailed, easy-to-understand solutions for all the questions from this chapter. These Trignometric Functions question answers will offer you valuable insights and explanations.

In previous class, we have discussed basic identities, trigonometric ratios and their applications in finding the distances between two real life objects. Now we extend the concept of trigonometric ratios to trigonometric functions. In this chapter, we will discuss about measurement of angles, conversion of angles from radian to degree and vice-versa, Definition of trigonometric functions with the help of unit circle, signs of functions in quadrants, domain, range and graph of functions, sum & product formulas, multiple angles formulas. General Solution of trigonometric equations.

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### Exercise 1

•  Q3 A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second? Ans: Number of revolutions made by the wheel in 1 minute = 360 ∴Number of revolutions made by the wheel in 1 second =360/60 = 6 In one complete revolution, the wheel turns an angle of 2π radian. Hence, in 6 complete revolutions, it will turn an angle of 6 × 2π radian, i.e., 12 π radian Thus, in one second, the wheel turns an angle of 12π radian.

### Key Features of NCERT Class 11 Mathematics Chapter 'Trignometric Functions' question answers :

• All chapter question answers with detailed explanations.
• Simple language for easy comprehension.
• Aligned with the latest NCERT guidelines.
• Perfect for exam preparation and revision.