(sin^(2)3A)/(sin^2A)-(cos^(2)3A)/(cos^2A...

`(sin^(2)3A)/(sin^2A)-(cos^(2)3A)/(cos^2A)=`

A

cos 2A

B

8 cos 2A

C

`(1)/(8) cos 2A`

D

None of these

Verified by Experts

The correct Answer is:

B

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