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Some Applications of Trigonometry
Question
Wired Faculty App

Evaluate:
sin 38° - cos 52°.

Answer

sin 38° - cos 52°.
                     = sin (90° - 52°) - cos 52°
                     = cos 52° - cos 52° = 0

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Some More Questions From Some Applications of Trigonometry Chapter

Choose the correct option and justify your choice:
sin 2A = 2 sin A is true when A = 
(A) 0°         (B) 30°         (C) 45°       (D) 60°