cos^(6) theta + sin^(6) theta=...

`cos^(6) theta + sin^(6) theta`=

A

`1+ sin^(3) theta . Cos^(3) theta`

B

`1 -3 sin^(3) theta . Cos^(3) theta`

C

`1 -3 sin^(2) theta . Cos^(2) theta`

D

`1+ 3 sin^(3) theta . Cos^(3) theta`

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