1.

The value of cos2 π6+x-sin2 π6-x is(a) 12 cos 2 x(b) 0(c) -12 cos 2 x(d) 12

Answer» The value of cos2 π6+x-sin2 π6-x is

(a) 12 cos 2 x

(b) 0

(c) -12 cos 2 x

(d) 12


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