Example 8 - Chapter 3 Class 11 Trigonometric Functions
Last updated at August 17, 2026 by Teachoo
Finding Value of trignometric functions, given angle
Negative Angle Identities
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Chapter 3 Class 11 Trigonometric Functions
Concept wise
- Radian measure - Conversion
- Arc length
- Finding Value of trignometric functions, given other functions
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Finding Value of trignometric functions, given angle
- (x + y) formula
- 2x 3x formula - Proving
- 2x 3x formula - Finding value
- cos x + cos y formula
- 2 sin x sin y formula
- Finding Principal solutions
- Finding General Solutions
- Sine and Cosine Formula
Transcript
Example 8 Find the value of sin (31" " π" " )/3 sin 𝟑𝟏𝝅" " /𝟑 = sin (10π + 𝟏/𝟑 "π ") = sin (5 × (2π) + 1/3 "π ") = sin (𝟏/𝟑 " π" ) = sin (1/3 " × 180°" ) = sin 60° = √𝟑/𝟐
