document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=398522>Question 398522</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, can anyone help with this complex numbers problem?\r<BR>\n" );
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document.write( "In these complex numbers questions exact values for &#952; are to be used and answers are to be expressed as radicals:\r<BR>\n" );
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document.write( "1. If z=18(cos315°+i*sin315°) in trigonometric form find z in standard form.\r<BR>\n" );
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document.write( "2. If z=4&#8730;(3)(cos150°+i*sin150°) in trigonometric form find z in standard form.\r<BR>\n" );
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document.write( "Thank you for your time and consideration!  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #282360 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=282360\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. If z=18(cos315°+i*sin315°) in trigonometric form find z in standard form.<BR>\n" );
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document.write( "x = 18*cos(315) = 18*cos(-45) = 18*cos(45) = 18[sqrt(2))/2 = 9sqrt(2)<BR>\n" );
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document.write( "y = 18*sin(315) = 18*sin(-45) = 18[-sin(45)] = -18[sqrt(2)/2] = -9sqrt(2)<BR>\n" );
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document.write( "z = (9sqrt(2))-9sqrt(2)i<BR>\n" );
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document.write( "2. If z=4&#8730;(3)(cos150°+i*sin150°) in trigonometric form find z in standard form. <BR>\n" );
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document.write( "Go thru the same process.<BR>\n" );
document.write( "Remember cos(150) = -cos(30) = -sqrt(3)/2<BR>\n" );
document.write( "and sin(150) = sin(30) = 1/2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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