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a cot theta+b cosec theta=p and b cot t...

`a cot theta+b cosec theta=p and b cot theta+ a cosec theta=q` then `p^(2)-q^(2)` is equal to

A

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

B

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

C

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

D

`b-a`

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The correct Answer is:
B
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