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The general value of x obtained from the...

The general value of x obtained from the equation `cos2x=sinalpha` is

A

`x=2npipm((pi)/(2)-alpha), ninZ`

B

`x=(npi+(-1)^(n)alpha)/(2), ninZ`

C

`x=npipm((pi)/(4)-(alpha)/(2)), ninZ`

D

`2x=(pi)/(2)-alpha`

Text Solution

Verified by Experts

The correct Answer is:
C
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