sec^(2) 28^(@) -cot^(2) 62^(@) + sin^(2)...

`sec^(2) 28^(@) -cot^(2) 62^(@) + sin^(2) 60^(@) + cosec^(2) 30^(@)` का मान है :

A

`(7)/(2)`

B

3

C

`(19)/(4)`

D

`(23)/(4)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

D

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