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 #587332 by lwsshak3(11628)\"\" \"About 
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If sin A= -1/squareroot of 5 with A in QII, find sin 2A
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\n" ); document.write( "\"sinA=-1%2Fsqrt%285%29=-sqrt%285%29%2F5\"
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\n" ); document.write( "sin2A=2cosAsinA=2*√5/5*2√5/5=20/25=4/5
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