Question

Plz solve this
(Trigonometric ratios of multiple angles )
Salute u if u solved this

Answer 1

cos a × sin a - sin a ×cos a/ sin a × cos a

sin(5a-a)/ sin a× cos a

2 sin 4a/ 2 sin a× cos a

2×2 sin2a× cos2a/ sin2a

4 cos 2a

proved....

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