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document.write( "While correct, neither the notation (r,θ) nor rei*θ is used when teaching complex numbers \r\n" );
document.write( "in basic trigonometry courses. That's because such notation eliminates the trigonometric functions.\r\n" );
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document.write( "
Find the 3 cube roots of i in polar form.\r\n" );
document.write( "i = 0 + 1i\r\n" );
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document.write( "Graph the vector whose magnitude (modulus) is r=1, whose tail is at (0,0),\r\n" );
document.write( "and whose tip is at (0,1), and whose argument (angle) is θ=90o. \r\n" );
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document.write( "
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document.write( "Since the cube root is the 1/3 power:\r\n" );
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\r\n" );
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document.write( "We raise everything to the 1/3 power. In doing so we will use deMoivre's\r\n" );
document.write( "theorem, where we raise the magnitude (modulus 1) to the 1/3 power (i.e.,\r\n" );
document.write( "take its cube root 1), and multiply its argument (angle) by 1/3.\r\n" );
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\r\n" );
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document.write( "Now, since there are 3 cube roots, we take three consecutive integers for n.\r\n" );
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document.write( "Let n=0\r\n" );
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document.write( "Let n=1\r\n" );
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document.write( "Let n=2\r\n" );
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document.write( "
.\r\n" );
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document.write( "Edwin
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document.write( "![\"\"](\"/images/stars/stars-13.gif\")
