document.write( "Question 236338: how to find the exact value of sin 225 \n" ); document.write( "
Algebra.Com's Answer #173975 by nerdybill(7384)\"\" \"About 
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how to find the exact value of sin 225
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\n" ); document.write( "Looking at the unit circle
\n" ); document.write( "sin(225)
\n" ); document.write( "is in the third quadrant
\n" ); document.write( "225 - 180 = 45
\n" ); document.write( "sin(45) mapped to the third quadrant is
\n" ); document.write( "\"-sqrt%282%29%2F2\"
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