cos^(4) theta- sin^(4) theta का मान किस...

`cos^(4) theta- sin^(4) theta` का मान किसके बराबर है ?

A

`sin^(2) theta-cos^(2) theta`

B

`(sin+ theta+cos theta) (sin theta-cos theta)`

C

`(sin theta+cos theta) (cos theta-sin theta)`

D

`(cos^(2) theta+sin^(2) theta) (cos theta- sin theta)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

C

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