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tan(1/2 cos^-1 (2/sqrt5))ની કિમત …….....

`tan(1/2 cos^-1 (2/sqrt5))`ની કિમત ……..

A

`2sqrt5`

B

`sqrt5-2`

C

`(5-sqrt2)/2`

D

`5-sqrt2`

Text Solution

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