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सिद्ध करे कि tan^(-1)((1)/(2)tan2A)+ta...

सिद्ध करे कि
`tan^(-1)((1)/(2)tan2A)+tan^(-1)(cotA)+tan^(-1)(cot^(3)A)=0` जबकि `pi/4 < A< pi/2`

A

`4 tan^(-1)(1)`

B

`2 tan^(-1)(2)`

C

0

D

इनमें से कोई नहीं

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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