cot 18^(@) [cot 72^(@).cos^(2) 22^(@) + ...

`cot 18^(@) [cot 72^(@).cos^(2) 22^(@) + (1)/(tan 72^(@).sec^(2) 68^(@))]` का मान है

A

2

B

0

C

1

D

इनमे से कोई नहीं

Verified by Experts

The correct Answer is:

C

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