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If x=secphi-tanphi and y=cosecphi+cotphi...

If `x=secphi-tanphi` and `y=cosecphi+cotphi` then

A

`x=(y+1)/(y-1)`

B

`x=(y-1)/(y+1)`

C

`y=(1+x)/(1-x)`

D

`xy+x-y+1=0`

Text Solution

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The correct Answer is:
B, C, D
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Knowledge Check

  • If x=secphi-tanphi&y=cosecphi+cotphi , then

    A
    `x=(y+1)/(y-1)`
    B
    `y=(1-x)/(1+x)`
    C
    `x=(y-1)/(y+1)`
    D
    `y=(1+x)/(1-x)`

  • If tantheta-tanphi=xandcotphi-cottheta=y , then cot(theta-phi)=?

    A
    `(1)/(x)-(1)/(y)`
    B
    `(1)/(x)+(1)/(y)`
    C
    `x+y`
    D
    `(1)/(y)-(1)/(x)`

  • If 2sec 2theta=tan phi+cotphi , then one of the values of theta+phi is

    A
    `pi/2`
    B
    `pi/4`
    C
    `pi/3`
    D
    none of these

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