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The value of cosycos(pi/2-x)-cos(pi/2-y)...

The value of `cosycos(pi/2-x)-cos(pi/2-y)cosx+sinycos(pi/2-x)+cosxsin(pi/2-y)` is zero if `x=0` (b) `y=0` `x=y` (d) `npi+y-pi/4(n in Z)`

A

`x=0`

B

`y=0`

C

`x=y+(pi)/(4)`

D

`x=(3pi)/(4)+y`

Text Solution

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The correct Answer is:
D
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