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4 cos36^@+cot7(1^@)/2=...

`4 cos36^@+cot7(1^@)/2=`

A

`1+sqrt2+sqrt3+sqrt4+sqrt5+sqrt6`

B

`1+sqrt2-sqrt3+sqrt4-sqrt5+sqrt6`

C

`1-sqrt2+sqrt3-sqrt4+sqrt5-sqrt6`

D

`1+sqrt2-sqrt3+sqrt4+sqrt5-sqrt6`

Text Solution

Verified by Experts

The correct Answer is:
A
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