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Trig

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cos x cot = csc - sin

  • Trig -

    What are we doing?
    Solving ?
    or
    proving it is an identity?

    BTW, you have to put the x for all the trig functions
    that is,
    cosx cotx = cscx - sinx

    Let's see if it is an identity...

    LS = cosx (cosx/sinx
    = cos^2 x/sinx

    RS = 1/sinx - sinx
    = (1 - sin^2 x)/sin
    = cos^2 x/sinx
    = LS

    ahh, it is an identity

  • Trig -

    Cos (cos/sin)= cos^2/sin = (1 - sin^2x)/sin
    1/sin sin^2/sin = csc x sin x

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