document.write( "Question 1076190: Did I write the complex number for 100(cos240° + i sin240°) in standard form correctly? Answer: 100(cos(240°) + i sin(240°)). \n" ); document.write( "
Algebra.Com's Answer #690912 by ikleyn(53756)\"\" \"About 
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document.write( "What you wrote, is the trigonometric form of a complex number, or polar form.\r\n" );
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document.write( "The standard form is a + bi.\r\n" );
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document.write( "For it, write cos(240°) = \"-1%2F2\" and sin(240°) = \"-sqrt%283%29%2F2\".\r\n" );
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document.write( "Then the standard form is \"100%2A%28%28-1%2F2%29+%2B+%28-sqrt%283%29%2F2%29%2Ai%29%29\" = \"-50+-+50%2Asqrt%283%29%2Ai\".\r\n" );
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\n" ); document.write( "\n" ); document.write( "There is a bunch of my lessons on complex numbers\r
\n" ); document.write( "\n" ); document.write( "    - Complex numbers and arithmetical operations on them\r
\n" ); document.write( "\n" ); document.write( "    - Complex plane\r
\n" ); document.write( "\n" ); document.write( "    - Addition and subtraction of complex numbers in complex plane\r
\n" ); document.write( "\n" ); document.write( "    - Multiplication and division of complex numbers in complex plane\r
\n" ); document.write( "\n" ); document.write( "    - Raising a complex number to an integer power\r
\n" ); document.write( "\n" ); document.write( "    - How to take a root of a complex number\r
\n" ); document.write( "\n" ); document.write( "    - Solution of the quadratic equation with real coefficients on complex domain\r
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\n" ); document.write( "\n" ); document.write( "    - Solved problems on taking roots of complex numbers\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on arithmetic operations on complex numbers\r
\n" ); document.write( "\n" ); document.write( "    - Solved problem on taking square root of complex number\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-II in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Complex numbers\".\r
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