tan^(2)phi + cot^(2)phi - sec^(2) phi co...

`tan^(2)phi + cot^(2)phi - sec^(2) phi cosec^(2)phi` का मान निम्नलिखित में से किसके बराबर होगा ?

A

`-2`

B

1

C

0

D

`-1`

Verified by Experts

The correct Answer is:

A

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