document.write( "Question 981146: Express the complex number in trigonometric form.
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\n" ); document.write( "\n" ); document.write( "Would it be 4(cos 270° + i sin 270°)? Please Help! \n" ); document.write( "

Algebra.Com's Answer #602172 by ikleyn(52812) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "Trigonometric form of the number -4 is\r
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\n" ); document.write( "\n" ); document.write( "-4 = 4(cos(180°) + i*sin(180°)),\r
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\n" ); document.write( "\n" ); document.write( "because cos(180°) = -1, sin(180°) = 0.\r
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\n" ); document.write( "comment from student: Oh okay! So it would be: 4(cos 0° + i sin 0°)?
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\n" ); document.write( "\n" ); document.write( "NO !!!\r
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\n" ); document.write( "\n" ); document.write( "It is\r
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\n" ); document.write( "\n" ); document.write( "-4 = 4(cos(180°) + i*sin(180°)).\r
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