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The value of (sin (78^@+theta)-cos (12^@...

The value of `(sin (78^@+theta)-cos (12^@-theta)+(tan^2 70^@-cosec^2 20^@))/(sin 25^@ cos65^@+cos 25^@ sin65^@)` is:
`(sin (78^@+theta)-cos (12^@-theta)+(tan^2 70^@-cosec^2 20^@))/(sin 25^@ cos65^@+cos 25^@ sin65^@)` का मान ज्ञात करें |

A

0

B

2

C

`-2`

D

`-1`

Text Solution

Verified by Experts

The correct Answer is:
D
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