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If (sin theta+cos theta)/(sin theta-cos ...

If `(sin theta+cos theta)/(sin theta-cos theta)` then the value of `sin^(4)theta` is

A

`(16)/(25)`

B

`(2)/(5)`

C

`(1)/(5)`

D

`(3)/(5)`

लिखित उत्तर

Verified by Experts

The correct Answer is:
a

`(sin theta+cos theta)/(sin theta-cos theta)=(3)/(1)`
find `sin^(4)theta=`?
`(sin theta+cos theta)/(sin theta-cos theta)=(3+1)/(3-1)`
`rArr tan theta=2`
`tan theta=("perpendicular")/("Base")=(2)/(T)`
`rArr sin^(4)theta=((2)/sqrt(5))^(2)=16//25`
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