document.write( "Question 875407: How do i find the exact value of the product\r
\n" ); document.write( "\n" ); document.write( "cos[5pi/24] sin[11pi/24] \n" ); document.write( "

Algebra.Com's Answer #528179 by lwsshak3(11628) $\"\"$ $\"About$

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How do i find the exact value of the product
\n" ); document.write( "cos[5pi/24] sin[11pi/24]
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\n" ); document.write( "Identity: $\"sin%28s%29cos%28t%29=%281%2F2%29%28sin%28s%2Bt%29%2Bsin%28s-t%29%29\"$
\n" ); document.write( "sin[11pi/24]cos[5pi/24]=

\n" ); document.write( "..
\n" ); document.write( "calculator check:
\n" ); document.write( "set calculator to radians
\n" ); document.write( "cos[5pi/24]* sin[11pi/24]≈0.786566
\n" ); document.write( "exact value as calculated=(√3+√2)/4≈0.786566
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