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यदि l n e^((2 cos^(2)x - 1)) = cos x है,...

यदि `l n e^((2 cos^(2)x - 1)) = cos x` है, जहाँ `0 lt x le pi` है, तो x का मान है

A

0

B

`(5 pi)/(6)`

C

`(pi)/(6)`

D

`(2 pi)/(3)`

लिखित उत्तर

Verified by Experts

The correct Answer is:
D
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