document.write( "Question 1202274: Simplify 4cos^2x - 3sin^2x in terms of cosx. \n" ); document.write( "

Algebra.Com's Answer #836979 by ikleyn(52798) $\"\"$ $\"About$

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document.write( "Replace  sin^2(x)  by  (1-cos^2(x)).  You will get\r\n" );
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document.write( "    4cos^2(x) - 3sin^2(x) = 4cos^2(x) - 3(1-cos^2(x)) = 7cos^2(x) - 3.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "To avoid a non-mathematical accent, use a proper Math language: \r
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\n" ); document.write( "\n" ); document.write( " \" express 4cos^2(x) - 3sin^2(x) in terms of cos(x) \".\r
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