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"4 cos" (pi)/(10) - "3 sec" (pi)/(10) - ...

`"4 cos" (pi)/(10) - "3 sec" (pi)/(10) - "2 tan" (pi)/(10)` का मान होगा-

A

1

B

`sqrt(5) - 1`

C

`sqrt(5) + 1`

D

zero

लिखित उत्तर

Verified by Experts

The correct Answer is:
D
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