SkyKing200
SkyKing200 SkyKing200
  • 08-08-2018
  • Mathematics
contestada

80 POINTS

Verify the Identity.
cot(x-π/2) = -tanx

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kelly0922r
kelly0922r kelly0922r
  • 08-08-2018

= cos(x-π/2)/sin(x-π/2)

= (cos(x)cos(π/2) + sin((x)sin(π/2)) / (sin(x)cos(π/2) - cos(x)sin(π/2)

= sin(x)/ (-cos(x)) .... cos(π/2) = 0; sin(π/2) = 1

= -tan(x)

idk if this is right but i tried

Answer Link
Аноним Аноним
  • 08-08-2018

= -tan(x) is the answer :) :)

Answer Link

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