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OpenStudy (anonymous):
triangle PQR has vertices P(1,5), Q(6,-7), and R(-2,1). how would i find the angle measures of this triangle
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OpenStudy (anonymous):
i used the distance formulas and got p=8.94, q=5, r=13 ... :S then i used the cosine law to find the angles for the equations. but i got the wrong answerr
OpenStudy (alexwee123):
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