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OpenStudy (anonymous):
Find sinθ if θ is an angle in standard position and the point with coordinates (3, -4) lies on the terminal side of the angle.
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OpenStudy (mathstudent55):
First, you need the length of the hypotenuse of the triangle. Then remember that sin = opp/hyp. Also, keep in mind that in the 4th quadrant, the sine is negative. |dw:1381945138838:dw|
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