document.write( "Question 1060457: If z1=5cispi/7 and z2=2cispi/9 find z2*z1 \n" ); document.write( "

Algebra.Com's Answer #675397 by ikleyn(52878) $\"\"$ $\"About$

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\n" ); document.write( "Multiply the modules and add the arguments.\r
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\n" ); document.write( "\n" ); document.write( "For introductory lessons on complex numbers see \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
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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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