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prove that
1+sin2x-cos2x / sin2x+cos2x = tanx

  • maths -

    not true, so it can't be proven the way you typed it

    probably needs brackets

    counterexample:
    let x = 30°
    LS = 1 + sin60° - cos60°/sin60° + cos60°
    = 1 + √3/2 - (1/2) / (√3/2) + 1/2
    = 3/2 + √3/2 - 1/√3

    RS = tan 30 = 1/√3 ≠ LS

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