sin^(2)60^(@)+cos^(2)30^(@)-sin^(2)45^(@...

`sin^(2)60^(@)+cos^(2)30^(@)-sin^(2)45^(@)-3sin^(2)90^(@)` का मान ज्ञात करे।

A

`-1(3)/(4)`

B

`(1)/(3)`

C

`-2`

D

`-2(1)/(2)`

Verified by Experts

The correct Answer is:

C

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