If sin (3alpha) /cos(2alpha) < 0 If alph...

If `sin (3alpha) /cos(2alpha)` < 0 If `alpha` lies in

A. `(13pi//48,14pi//48)`

B. `(14pi//48,18pi//48)`

C. `(18pi//48,23pi//48)`

D. any of these intervals

A

`(13pi//48,14pi//48)`

B

`(14pi//48,18pi//48)`

C

`(18pi//48,23pi//48)`

D

any of these intervals

Verified by Experts

The correct Answer is:

A

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