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General solution of cosx=(-1)/(2) is...

General solution of `cosx=(-1)/(2)` is

A

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

B

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

C

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

D

`3npipm(4pi)/(3), ninZ`

Text Solution

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The correct Answer is:
B
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