SOLUTION: the point (-3,3) is on the terminal is of an angle theta. find cos theta

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Question 972189: the point (-3,3) is on the terminal is of an angle theta. find cos theta
Answer by lwsshak3(11628) About Me  (Show Source):
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The point (-3,3) is on the terminal is of an angle theta. find cos theta
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hypotenuse of reference right triangle in quadrant II=√((3^2)+(-3)^2)=√18
cos theta=-3√18=-3√18/18