document.write( "Question 1144924: Find the exact value of cos75
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Algebra.Com's Answer #766111 by josgarithmetic(39620) $\"\"$ $\"About$

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$\"cos%2875%29\"$
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\n" ); document.write( " $\"cos%2845%29cos%2830%29-sin%2845%29sin%2830%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"%28sqrt%286%29-sqrt%282%29%29%2F4\"$ \r
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\n" ); document.write( "\n" ); document.write( "(Know the sines and cosines of some common reference angle measures.) \n" ); document.write( "

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