document.write( "Question 860157: Find the general solution in degrees of the equation cos(5x - 20°) = cos 40° \n" ); document.write( "

Algebra.Com's Answer #518164 by Fombitz(32388) $\"\"$ $\"About$

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$\"5x-20=40\"$ and $\"5x-20=-40\"$ since $\"cos%2840%29=cos%28-40%29\"$
\n" ); document.write( " $\"5x-20=40\"$
\n" ); document.write( " $\"5x=60\"$
\n" ); document.write( " $\"x=12\"$
\n" ); document.write( "and
\n" ); document.write( " $\"5x-20=-40\"$
\n" ); document.write( " $\"5x=-20\"$
\n" ); document.write( " $\"x=-4\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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