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posted by Natash on Monday, December 8, 2008 at 9:52pm.
Find cosq and sinq if the terminal side of q lies along the line y = - 2 x in quadrant IV.
take x = 1 then y = -2 hypotenuse = sqrt (1+4) = sqrt 5 then sin q = -2/sqrt 5 cos q = 1/sqrt 5
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