document.write( "Question 1137318: Find the exact value of the expression:
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Algebra.Com's Answer #755202 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "Apply the formula for the sine of the arguments' difference \r\n" );
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document.write( "sin(a-b) = sin(a)*cos(b) - cos(a)*sin(b).\r\n" );
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document.write( "You will get\r\n" );
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document.write( " =  =  =  = .\r\n" );
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