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If acos theta+b sin theta=p and a sin th...

If `acos theta+b sin theta=p` and `a sin theta-b cos theta=q` then

A

`a^(2)-b^(2)=p^(2)-q^(2)`

B

`a^(2)+b^(2)=p^(2)+q^(2)`

C

`a+b=p+q`

D

`a-b=p-q`

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