Q. 55.0( 2 Votes )

Choose the correc

Answer :

sin2x = 2 sin x cos x

sin x = 2 sin x/2 cos x/2

sin2x/2 + cos2x/2 = 1

Dividing by cos x/2 we get

Taking – common

0 ≤ x ≤ π/2

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