1.

The value of 2sin 2x + 2 cos2x-1cos x-sin x-cos 3x+sin 3x is(a) cos x(b) sec x(c) cosec x(d) sin x

Answer» The value of 2sin 2x + 2 cos2x-1cos x-sin x-cos 3x+sin 3x is

(a) cos x

(b) sec x

(c) cosec x

(d) sin x


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