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If 1/2sin^(-1)[(3sin2theta)/(5+4cos2thet...

If `1/2sin^(-1)[(3sin2theta)/(5+4cos2theta)]=tan^(-1)x ,t h e nx=` (a)`tan3theta` (b) `3tantheta` (c) `(1/3)tantheta` (d) `3cottheta`

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