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Math Help - Reference Triangle for csc(-150degrees)

  1. #1
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    Reference Triangle for csc(-150degrees)

    I need to draw a reference triangle for csc(-150degrees) in order to find the exact value. I've drawn my triangle in the 3rd quadrant, but unsure of what the sides should be labeled as. Thanks!
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  2. #2
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    Quote Originally Posted by captaintoast87 View Post
    I need to draw a reference triangle for csc(-150degrees) in order to find the exact value. I've drawn my triangle in the 3rd quadrant, but unsure of what the sides should be labeled as. Thanks!
    cosec(-150)=\frac{1}{sin(-150)}

    =\frac{1}{-sin150}

    =\frac{1}{-sin30}

    =\frac{1}{-0.5}

     <br />
=-2<br />
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