Grd 12 Math

Can someone please help me work out how to get to the answer of:
tanx + tan (pi-x) + cot (pi/2+x) = tan (2pi-x)

asked by Jess
  1. tan (pi-x) = -tan(x)
    cot(pi/2+x) = -tan(x)
    tan(2pi-x) = -tan(x)

    now things fall out.

    posted by Steve

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