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tan((1)/(2).cos^(-1).(2)/(sqrt(5)))=...

`tan((1)/(2).cos^(-1).(2)/(sqrt(5)))=`

A

`2-sqrt(5)`

B

`sqrt(5)-2`

C

`(sqrt(5)-2)/(2)`

D

`5-sqrt(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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