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If sec theta+tan theta=p,0^@< theta<90^@...

If `sec theta+tan theta=p`,`0^@< theta<90^@`, then `(p^2-1)/(p^2+1)` is equal to :
यदि `sec theta+tan theta=p`,है, जहाँ `0^@< theta<90^@` है, तो`(p^2-1)/(p^2+1)` का मान किसके बराबर होगा ?

A

`cosec theta`

B

`sin theta`

C

`cos theta`

D

`2cosec theta`

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