यदि cos^(4) theta - sin^(4) theta = (2)/...

यदि `cos^(4) theta - sin^(4) theta = (2)/(3), `तो `1-2 sin^(2) theta` का मान है-

A

`(4)/(3)`

B

0

C

`(2)/(3)`

D

`(1)/(3)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

C

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