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March 26, 2017

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Find the values of the trigonometric functions of è from the information given.

cot è = 1/2 , sin è < 0

  • Math Pre Cal - ,

    cot = 1/2
    cot > 0 in QI,QIII
    sin < 0 in QIII,QIV
    so, we are in QIII and x<0, y<0
    r = √5, so

    cot = x/y = -1/-2
    sin = y/r = -2/√5
    cos = x/r = -1/√5
    ...

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