document.write( "Question 1080053: Write the equation in polar coordinates. Then isolate the variable r when possible.
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Algebra.Com's Answer #694290 by ikleyn(52781)\"\" \"About 
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document.write( "x = \"r%2Acos%28alpha%29\",\r\n" );
document.write( "y = \"r%2Asin%28alpha%29\".    ====>\r\n" );
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document.write( "\"x%5E2+%2B+y%5E2\" = \"r%5E2%2A%28cos%5E2%28alpha%29+%2B+sin%5E2%28alpha%29%29\" = \"r%5E2\".\r\n" );
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document.write( "Therefore, your equation in polar coordinates is \r\n" );
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document.write( "\"r%5E2\" = \"8%2Ar%2Acos%28alpha%29\".\r\n" );
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document.write( "Next, you can cancel \"r\" in both sides. Then you get your FINAL equation\r\n" );
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document.write( "\"r\" = \"8%2Acos%28alpha%29\".\r\n" );
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