if tan theta =1 , then sin theta = _____ when theta lies in 3rd quadrant a)1/2 b) -1/2 c) -1/underroot 2 d) 1/underroot2
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if tan theta =1 , then sin theta = _____ when theta lies in 3rd quadrant a)1/2 b) -1/2 c) -1/underroot 2 d) 1/underroot2
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