document.write( "Question 961016: If sin A= -1/squareroot of 5 with A in QII, find sin 2A. \n" ); document.write( "
Algebra.Com's Answer #854563 by MathTherapy(10839)\"\" \"About 
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document.write( "If sin A= -1/squareroot of 5 with A in QII, find sin 2A.\r\n" );
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document.write( "This problem gives sin as negative (< 0) in the 2nd quadrant. One of the respondents confirms this, and further\r\n" );
document.write( "states that cos is positive (> 0) in the 2nd quadrant. When did sin become negative (< 0), and cos, positive (> 0)\r\n" );
document.write( " in the 2nd quadrant?\r\n" );
document.write( "This is so, so RIDICULOUS and obviously WRONG. The opposite holds true, though.
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