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Value of cos[pi/6+cos^(-1)(-1/2)] is...

Value of `cos[pi/6+cos^(-1)(-1/2)]` is _____

A

`-sqrt3/2`

B

`(sqrt3-1)/(2sqrt2)`

C

`(sqrt5-1)/4`

D

`(sqrt3+1)/(2sqrt2)`

Text Solution

Verified by Experts

The correct Answer is:
A
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