Question 961016
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If sin A= -1/squareroot of 5 with A in QII, find sin 2A.
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This problem gives sin as negative (< 0) in the 2nd quadrant. One of the respondents confirms this, and further
states that cos is positive (> 0) in the 2nd quadrant. When did sin become negative (< 0), and cos, positive (> 0)
 in the 2nd quadrant?
This is so, so RIDICULOUS and obviously WRONG. The opposite holds true, though.</font></font></font></b></pre>