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General solution of 2cos2x=-1 is...

General solution of `2cos2x=-1` is

A

`2npipm(2pi)/(3), ninZ`

B

`2npipm(3pi)/(2), ninZ`

C

`2npipm(pi)/(3), ninZ`

D

`npipm(pi)/(3), ninZ`

Text Solution

Verified by Experts

The correct Answer is:
D
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