If y=cos(2x+45^@), then dy/dx is...

If `y=cos(2x+45^@)`, then `dy/dx` is

A

`-pi/90sin(2x+45)`

B

`2sin(2x+45)`

C

`pi/90sin(2x+45)`

D

`-2sin(2x+45)`

Verified by Experts

The correct Answer is:

D

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