SOLUTION: if cos theta = 3/5 and sin theta < 0, find sin theta

SOLUTION: if cos theta = 3/5 and sin theta < 0, find sin theta

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Question 683009: if cos theta = 3/5 and sin theta < 0, find sin theta
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
if cos theta = 3/5 and sin theta < 0, find sin theta
cos>0 and sin<0 only in quadrant IV
reference angle is that of a 3-4-5 right triangle
therefore, sin theta=-4/5
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