(sin^(2)A-1).cosec^(2)(90^(@)-A) का मान ...

`(sin^(2)A-1).cosec^(2)(90^(@)-A)` का मान है :

A

`-1`

B

0

C

1

D

`sqrt(2)`

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The correct Answer is:

A

(sin^(2)A-1).cosec^(2)(90^(@)-A) का मान है :
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