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tan(A/2) is equal to...

`tan(A/2)` is equal to

A

`sqrt((1-sinA)/(1+sinA)`

B

`sqrt((1+sinA)/(1-sinA)`

C

`sqrt((1-cosA)/(1+cosA)`

D

`sqrt((1+cosA)/(1-cosA)`

Text Solution

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Let A, B and C are the angles of a plain triangle and tan(A/2)=1/3,tan(B/2)=2/3 then tan(C/2) is equal to............ A) 7/9 B) 2/9 C) 1/3 D) 2/3

Knowledge Check

  • Let A, B, C be the angles of a triangle and tan A/2 =1/3, tan B/2 = 2/3 . Then tan C/2 is equal to

    A
    `7/9`
    B
    `2/9`
    C
    `1/3`
    D
    `2/3`

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