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cos 15^(@)...

`cos 15^(@)`

A

`sqrt((1+cos 30^(@))/(2))`

B

`sqrt((1-cos 30^(@))/(2))`

C

`pm sqrt((1+cos 30^(@))/(2))`

D

`pmsqrt((1- cos30^(@))/(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
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