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1 October, 20:45

Disprove sinx+sin5x=tan3x

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  1. 1 October, 20:59
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    Counter-example:

    set x=π /6

    LHS=sin (π /6) + sin (5π /6) = 1/2+1/2=1

    RHS=tan (3π /6) = tan (pi/2) = ∞

    since LHS≠ RHS for the counter-example given, the statement

    sinx+sin5x=tan3x

    is false.
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