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i) If tan (A+B) = n tan (A-B), prove tha...

i) If tan (A+B) = n tan (A-B), prove that: `(n+1)/(n-1) = (sin2A)/(sin2B)`

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Knowledge Check

  • If tan ( A+B) = 3 tan A , then ( sin 2 ( A+B) + sin 2A)/( sin 2B) is equal to

    A
    `(1)/( 3)`
    B
    `( 1)/( 2)`
    C
    2
    D
    3

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