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cos((3pi)/(4)+x)-cos ((3pi)/(4)-x)=-sqrt...

`cos((3pi)/(4)+x)-cos ((3pi)/(4)-x)=-sqrt(2) sin x`

A

`-sqrt2 sin x`

B

`sqrt2 sin x`

C

`cos x`

D

`-sqrt2 cos x`

Text Solution

Verified by Experts

The correct Answer is:
A
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