Sec 70^(@) sin20^(@)+ cos20^(@) "cosec" ...

`Sec 70^(@) sin20^(@)+ cos20^(@) "cosec" 70^(@)` का मान है-
A)1
B)0
C)2
D)`-1`

A

1

B

0

C

2

D

`-1`

लिखित उत्तर

Verified by Experts

The correct Answer is:

C

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