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sin^(2)20^(@)+cos^(2)160^(@)-tan^(2)45^(...

`sin^(2)20^(@)+cos^(2)160^(@)-tan^(2)45^(@)`=__________

A

2

B

0

C

1

D

-2

Text Solution

Verified by Experts

The correct Answer is:
D
`sin(180-theta)=sintheta`.
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