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OpenStudy (anonymous):
If sin theta = 4/5 in quadrant II, what is cos theta? A) 3/5 B) -3/4 C) -3/5 D) 3/4
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OpenStudy (danjs):
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OpenStudy (danjs):
Since it is quadrant 2, the X will be a negative number, notice it is a 3-4-5- triangle So cosine of theta is adjacent over hypotenuse or -3/5
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