document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1200466>Question 1200466</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a) Two vectors (a) and (b) have an angle of 75° when placed tail to tail. If a=8<BR>\n" );
document.write( "and b=11 then find the vector sum.\r<BR>\n" );
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document.write( "b) Determine a unit vector in the same direction as the vector sum from a).<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #834612 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=834612\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) Two vectors (a) and (b) have an angle of 75° when placed tail to tail. If a=8<BR>\n" );
document.write( "and b=11 then find the vector sum.<BR>\n" );
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document.write( "It's a triangle with 2 sides and the included angle of 105 degs.<BR>\n" );
document.write( "Use the Cosine Law:<BR>\n" );
document.write( "r^2 = 8^2 + 11^2 - 2*8*11*cos(105)<BR>\n" );
document.write( "r^2 = ~230.55<BR>\n" );
document.write( "r = ~15.18<BR>\n" );
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document.write( "b) Determine a unit vector in the same direction as the vector sum from a).\r<BR>\n" );
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