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Some Applications Of Trigonometry

Question

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Evaluate:
sin 38° - cos 52°.

Solution

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

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°

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