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If tan theta=(a)/(b), find the value of ...

If tan `theta=(a)/(b)`, find the value of `(a sin theta-b cos theta)/(asin theta+b cos theta)`

A

`(a^2-b^2)/(a^2+b^2)`

B

`(b^2-a^2)/(b^2+a^2)`

C

`(a^2+b^2)/(a^2-b^2)`

D

none of these

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The correct Answer is:
A
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