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(cos x )/( cos (x-2y))= lambda implies t...

`(cos x )/( cos (x-2y))= lambda implies tan(x-y) tan y=`

A

`(1 + lamda)/( 1 - lamda)`

B

`(1- lamda)/( 1 + lamda)`

C

`(lamda)/( 1 + lamda)`

D

`(lamda)/(1 - lamda)`

Text Solution

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The correct Answer is:
B
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