1.

If sin x ( cos ""(x)/( 4) - 2 sin x) + ( 1 + sin "" (x)/( 4) - 2 cos x) cos x = 0then x =

Answer»

`( 8 K - 6 ) PI, l in Z`
` ( 8 k - 4 ) pi,k in Z`
` ( 8 k - 2 ) pi , k in Z`
` ( 8 k - 1) pi , k in Z`

ANSWER :A


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