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Mathematics 18 Online
OpenStudy (anonymous):

Find theta, if -720degrees

OpenStudy (anonymous):

\[-\sqrt{3}/2\]

OpenStudy (anonymous):

-510 degrees

OpenStudy (anonymous):

How do you reach that answer?

OpenStudy (anonymous):

|dw:1331612450590:dw| your reference angle alpha, is 30 degrees. Since it has to be in the third quadrant and negative, do a clockwise rotation once and 150 degrees more to get the answer: -360 + -150 = -510

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