document.write( "Question 402407: Find the exact value. Do not use a calculator.
\n" ); document.write( "sin(-15π) = ____________\r
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\n" ); document.write( "\n" ); document.write( "I have searched my book for examples on how to work this problem and I'm having a hard time finding a solution or an example of how to find the answer..If you could help me that would be great! Thanks!
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Algebra.Com's Answer #284654 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
angles greater than 2π (360º) just repeat the reference circle over (and over) again\r
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\n" ); document.write( "\n" ); document.write( "-15π is 7.5 complete circles in the negative (clockwise) direction\r
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\n" ); document.write( "\n" ); document.write( "so the reference angle is halfway around the circle; π radians or 180º\r
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\n" ); document.write( "\n" ); document.write( "sin(180º) = ?
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