If tan alpha = (P)/(q) "where" alpha = 6...

If `tan alpha = (P)/(q) "where" alpha = 6 beta, alpha` being an acute angle then `(1)/(2) ["p cosec" 2 beta - q sec 2 beta]` is equal to

A

`sqrt(p^(2) + q^(2))`

B

`sqrt(p^(2) - q^(2))`

C

`sqrt(2p^(2) + q^(2))`

D

`2 sqrt(p^(2) + q^(2))`

Verified by Experts

The correct Answer is:

A

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