SOLUTION: if csc theta=-3/2 and 180< theta < 270 what is cos theta

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Question 964549: if csc theta=-3/2 and 180< theta < 270 what is cos theta
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
if csc theta=-3/2 and 180< theta < 270 what is cos theta
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t is in QIII where x and y are negative.
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By defition csc = r/y
So, r = 3 and y = -2
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Then x = -sqrt[3^2-2^2] = -sqrt(5)
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Ans:: cos(t) = x/r = -sqrt(5)/3
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Cheers,
Stan H.
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