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sqrt(cos 2x)+sqrt(1+sin2x)=2sqrt(sinx+co...

`sqrt(cos 2x)+sqrt(1+sin2x)=2sqrt(sinx+cosx)` if

A

`sin x+cosx=1 `

B

`x =2n pi `

C

`x=n pi+pi//4 `

D

`sin x -cosx=0`

Text Solution

Verified by Experts

The correct Answer is:
b
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