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Chapter 3 Class 11 Trigonometric Functions
Ex 3.1, 2 (i) You are here
Ex 3.2, 7 Important
Ex 3.2, 8
Ex 3.2, 9 Important
Ex 3.3, 4
Ex 3.3, 5 (i) 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
Question 7 Important Deleted for CBSE Board 2024 Exams
Question 4 Important Deleted for CBSE Board 2024 Exams
Question 8 Important Deleted for CBSE Board 2024 Exams
Question 9 Important Deleted for CBSE Board 2024 Exams
Example 20 Important
Example 21 Important
Misc 4 Important
Misc 7 Important
Chapter 3 Class 11 Trigonometric Functions
Last updated at June 22, 2023 by Teachoo
Ex 3.1, 2 Find the degree measures corresponding to the following radian measures ("use " π" = " 22/7) (i) 11/16 We know that Radian measure = 𝝅/𝟏𝟖𝟎 × Degree measure 11/16 = 𝜋/180 × Degree measure 11/16 × 180/𝜋 = Degree measure Degree measure = 𝟏𝟏/𝟏𝟔 × 𝟏𝟖𝟎/𝝅 Degree measure = 11/16 × 180/22 × 7 = (𝟏𝟏 × 𝟏𝟖𝟎 × 𝟕)/(𝟏𝟔 × 𝟐𝟐) = (1 × 90 × 7)/(8 × 2) = (1 × 45 × 7)/(4 × 2) = 𝟑𝟏𝟓/𝟖 = 39° + 〖𝟑/𝟖〗^° = 39° + (3/8 × 60)^′ = 39° + (𝟒𝟓/𝟐)^′ = 39° + ("22" 𝟏/𝟐)^′ = 39° + (22)’ + (𝟏/𝟐)^′ = 39° + (22)’ + (𝟏/𝟐 × 𝟔𝟎)^′′ = 39° + (22)’ + (30)’’ = 39° 22’ 30’’