NCERT Solutions for Class 10 Maths Chapter 8
Important NCERT Questions
Introduction Trigonometry
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 8.3
Page No:190
Questions No:7
Express sin 67° + cos 75° in terms of trigonometric ratios of angles between 0° and 45°.
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We know that sin θ = cos (90° – θ) and cos θ = sin (90° – θ)
Therefore, sin 67° + cos75° = cos (90°- 67°) + sin (90° – 75°)
= cos 23° + sin 15°
Explanation video🙌😀