document.write( "Question 1011315: Use the power - reduction formula to find the exact value of sin ( pi/12) \n" ); document.write( "
Algebra.Com's Answer #627015 by ikleyn(52864)\"\" \"About 
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\n" ); document.write( "\"pi%2F12\" = \"180%2F12\" = 15°.\r
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\n" ); document.write( "\n" ); document.write( "sin(15°) = \"sqrt%282-sqrt%283%29%29%2F2\".\r
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\n" ); document.write( "\n" ); document.write( "See the lesson Trigonometric functions of half argument - Examples in this site. \r
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