lazoeniAbigsr lazoeniAbigsr
  • 21-11-2016
  • Mathematics
contestada

determine the exact value of the trig ratios:
cos(13pi/4)
cot(11pi/2)
sec(5pi/3)

Respuesta :

syed514
syed514 syed514
  • 21-11-2016

This isn't the only trick you'll need, but it will help you get these expressions in terms you'll be able to handle more easily. For example, for the cot example above: cot(-pi/2) = cos(-pi/2)/sin(-pi/2) = 0/-1 = 0

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