Question 4 - Examples - Chapter 3 Class 11 Trigonometric Functions
Last updated at Dec. 16, 2024 by Teachoo
Examples
Example 1
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Chapter 3 Class 11 Trigonometric Functions
Serial order wise
Transcript
Question 4 Solve cos đĨ = 1/2 Let cos x = cos y Given cos x = 1/2 From (1) and (2) cos y = 1/2 cos y = cos đ/3 y = đ/3 Rough We know that cos 60° = 1/2 So, 60° = 60 à Ī/180 = Ī/3 Since cos x = cos y General Solution is x = 2nĪ Âą y where n â Z Putting y = đ/3 x = 2nĪ Âąđ /đ where n â Z
