(sin(78^(@)+theta)-cos(12^(@)-theta)+(ta...

`(sin(78^(@)+theta)-cos(12^(@)-theta)+(tan^(2)70^(@)-cosec^(2)20^(@)))/(sin25^(@)cos65^(@)+cos25^(@)sin65^(@))` का मान है :

A

2

B

`-1`

C

`-2`

D

0

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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