Q. 55.0( 2 Votes )

Choose the correc A. –1/4

B. –1/2

C. 1/4

D. 1/2

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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