If the equation cos3xcos^(3)x+sin3xsin^(...

If the equation `cos3xcos^(3)x+sin3xsin^(3)x=0`, then `x` is equal to

A

(a) `(2n+1)(pi)/(4)`

B

(b) `(2n-1)(pi)/(4)`

C

(c) `(npi)/(4)`

D

(d) `(npi)/(3)`

Verified by Experts

The correct Answer is:

A

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