document.write( "Question 757630: Write the expression equivalent to cos 3 theta \n" ); document.write( "
Algebra.Com's Answer #460945 by Alan3354(69443)\"\" \"About 
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Write the expression equivalent to cos 3 theta
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\n" ); document.write( "cos(3theta) = 4cos^3(theta) - 3cos(theta)
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