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If (2sinalpha)/(1+cosalpha +sinalpha)=...

If ` (2sinalpha)/(1+cosalpha +sinalpha)=y` , then prove that `(1-cosalpha+sinalpha )/(1+sinalpha)` is also equal to y.

A

`1/lambda`

B

`lambda`

C

`1 - lambda`

D

`1 + lambda.`

Text Solution

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The correct Answer is:
B
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