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If sin 2 x=n sin 2 y then the value of (...

If `sin 2 x=n sin 2 y` then the value of `(tan (x+y))/(tan (x-y))=`

A

`(n+1)/(n-1)`

B

`(n-1)/(n+1)`

C

`(1-n)/(n+1)`

D

`(1+n)/(1-n)`

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Knowledge Check

  • If (sin (x + y))/(sin (x -y)) = (a + b)/(a - b) , then the value of (tanx )/(tany) is

    A
    a/b
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    D
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    A
    `(sin(a+y))/(sin a)`
    B
    `(cos^(2)(a+y))/(cos a)`
    C
    `(sin^(2)a)/(sin(a+y))`
    D
    `(sin^(2)(a+y))/(sin a)`

  • If sin^(-1) x + sin^(-1) y=pi/2 , then the value of cos^(-1) x +cos^(-1) y is :

    A
    `pi/2`
    B
    `pi`
    C
    0
    D
    `(2pi)/3`

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