document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=979889>Question 979889</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me with this vectors problem:\r<BR>\n" );
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document.write( "Given vectors of magnitude 3 and 4 with an angle between them of 80°, find the magnitude of the resultant. <BR>\n" );
document.write( "Enter answer accurate to two decimal places.\r<BR>\n" );
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document.write( "Thank you in advanced. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601126 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=601126\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "Given vectors of magnitude 3 and 4 with an angle between them of 80°, find the magnitude of the resultant. <BR>\n" );
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document.write( "Place the start of one vector at the end of the first.<BR>\n" );
document.write( "The resultant is the 3rd side of the triangle.<BR>\n" );
document.write( "The interior angle = 100 degs<BR>\n" );
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document.write( "Use the Cosine Law:<BR>\n" );
document.write( "r^2 = 3^2 + 4^2 - 2*3*4*cos(100)<BR>\n" );
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