document.write( "Question 1058467: Evaluate the expression.
\n" ); document.write( " $\"+cos%28-x%29+\"$ $\"+cot%28x%29+\"$ $\"+sin%28-x%29+\"$
\n" ); document.write( "A.) $\"+cos%28x%29+\"$
\n" ); document.write( "B.) $\"+-cos%28x%29+\"$
\n" ); document.write( "C.) $\"+cos%5E2%28x%29+\"$
\n" ); document.write( "D.) $\"+-cos%5E2%28x%29+\"$ \n" ); document.write( "

Algebra.Com's Answer #673529 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Memorize the 6 trig ratios for the negative angles:\r\n" );
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document.write( "sin(-x) = -sin(x)\r\n" );
document.write( "cos(-x) = cos(x)\r\n" );
document.write( "tan(-x) = -tan(x)\r\n" );
document.write( "sec(-x) = sec(x)\r\n" );
document.write( "csc(-x) = -csc(x)\r\n" );
document.write( "cot(-x) = -cot(x)\r\n" );
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document.write( "Use the identity \r\n" );
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document.write( "Edwin

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