document.write( "Question 1040287: The point (3, -4) is on the terminal side of an angle . What is cos ? \n" ); document.write( "

Algebra.Com's Answer #655078 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "The x-coordinate, 3, is the adjacent side.\r\n" );
document.write( "The y-coordinate, -4, is the opposite side.\r\n" );
document.write( "The hypotenuse is worked out with the Pythagorean theorem:\r\n" );
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document.write( "And we want the cosine.\r\n" );
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document.write( "We learned that \r\n" );
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document.write( "So the cosine is \r\n" );
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document.write( "Edwin

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