cosec^(2) 18^(@) - (1)/(cot^(2) 72^(@)) ...

`cosec^(2) 18^(@) - (1)/(cot^(2) 72^(@))` का मान कितना होगा ?

A

`(1)/(sqrt(3))`

B

`(sqrt(2))/(3)`

C

`(1)/(2)`

D

1

Verified by Experts

The correct Answer is:

D

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