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Last updated at Feb. 12, 2020 by Teachoo

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Ex 3.1, 1 Find the radian measures corresponding to the following degree measures: 25° Radian measure = "π" /180 × Degree measure = "π" /180 × 25° = "π" × 5/36 = 𝟓𝝅/𝟑𝟔 radians Ex 3.1, 1 Find the radian measures corresponding to the following degree measures: (ii) –47° 30’ –47° 30′ = –(47° + 30′) = –("47" °"+ " (30°)/60) = –("47" °"+ " ( 1°)/2) = –(( 94 + 1°)/2) = –(( 95°)/2) 1 degree = 60 min i.e. 1° = 60′ Radian measure = "π" /180 × degree measure = "π" /180 × (("–" 95)/2) = "π" × (−19)/72 = (−𝟏𝟗𝝅)/𝟕𝟐 radians Ex 3.1, 1 Find the radian measures corresponding to the following degree measures: (iii) 240° Radian measure = "π" /180 × degree measure = "π" /180 × 240° = "π" × 4/3 radians = 𝟒/𝟑 "π" radians Ex 3.1, 1 Find the radian measures corresponding to the following degree measures: (iv) 520° Radian measure = "π" /180 × degree measure = "π" /180 × 520° = "π" × 26/9 = 𝟐𝟔/𝟗 "π" radians

Chapter 3 Class 11 Trigonometric Functions

Ex 3.1, 1
Important
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Ex 3.1, 2 Important

Ex 3.2, 7 Important

Ex 3.2, 8 Important

Ex 3.2, 9 Important

Ex 3.3, 4

Ex 3.3, 5 Important

Ex 3.3, 8 Important

Ex 3.3, 11 Important

Ex 3.3, 18 Important

Ex 3.3, 23 Important

Ex 3.3, 21 Important

Example 24 Important

Ex 3.4, 4 Important

Ex 3.4, 8 Important

Ex 3.4, 9 Important

Example 27 Important

Example 28 Important

Misc 4 Important

Misc 7 Important

Class 11

Important Questions for exams Class 11

- Chapter 1 Class 11 Sets
- Chapter 2 Class 11 Relations and Functions
- Chapter 3 Class 11 Trigonometric Functions
- Chapter 4 Class 11 Mathematical Induction
- Chapter 5 Class 11 Complex Numbers
- Chapter 6 Class 11 Linear Inequalities
- Chapter 7 Class 11 Permutations and Combinations
- Chapter 8 Class 11 Binomial Theorem
- Chapter 9 Class 11 Sequences and Series
- Chapter 10 Class 11 Straight Lines
- Chapter 11 Class 11 Conic Sections
- Chapter 12 Class 11 Introduction to Three Dimensional Geometry
- Chapter 13 Class 11 Limits and Derivatives
- Chapter 14 Class 11 Mathematical Reasoning
- Chapter 15 Class 11 Statistics
- Chapter 16 Class 11 Probability

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.