If u(n) = sin ^(n) theta + cos ^(n) thet...

If `u_(n) = sin ^(n) theta + cos ^(n) theta,` then ` 2 u_(6) -3 u_(4)` is equal to.......... A) -1 B) `12 sin ^(2) theta cos ^(2) theta` C) 1 D) `12 tan ^(2) theta cos ^(2) theta `

A

`-1`

B

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

C

1

D

`12 tan ^(2) theta cos ^(2) theta `

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The correct Answer is:

A

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