1.

The value of cos4 x+sin4 x-6 cos2 x sin2 x is(a) cos 2x(b) sin 2x(c) cos 4x(d) none of these

Answer» The value of cos4 x+sin4 x-6 cos2 x sin2 x is

(a) cos 2x

(b) sin 2x

(c) cos 4x

(d) none of these


Discussion

No Comment Found