document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=980796>Question 980796</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm having difficulties solving this problem. Could someone please help me?\r<BR>\n" );
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document.write( "Two forces with magnitudes of 131 and 52 newtons act on point with a resultant force of 100 <BR>\n" );
document.write( "newtons. Find the angle, in radians, between the forces.\r<BR>\n" );
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document.write( "Enter answer accurate to four decimal places.\r<BR>\n" );
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document.write( "Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601925 by </B><A HREF=/tutors/aboutme.mpl?userid=Timnewman><B>Timnewman(323)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Timnewman><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=Timnewman><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=601925\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> From your cosine rule,recall that<BR>\n" );
document.write( "   CosB=(c²+a²-b²)/2ac<BR>\n" );
document.write( "Draw the vector and apply the formula.<BR>\n" );
document.write( " from your diagramme,(i.e triangle) formed by the two vectors,<BR>\n" );
document.write( "if a=52,<BR>\n" );
document.write( "   b=100<BR>\n" );
document.write( "   C=131<BR>\n" );
document.write( "   B=?<BR>\n" );
document.write( "then,<BR>\n" );
document.write( "cosB=(131²+52²-100²)/2*131*52  <BR>\n" );
document.write( "evaluating the above,<BR>\n" );
document.write( "  cosB=(9865)/(13624)<BR>\n" );
document.write( "  cosB=0.7241<BR>\n" );
document.write( "  B=cos-1(0.7241)<BR>\n" );
document.write( "  B=43.6068degres<BR>\n" );
document.write( "now convert 43.6068º to radian<BR>\n" );
document.write( "  B=(pi/180)*46.6068<BR>\n" );
document.write( "  B=0.7612radian<BR>\n" );
document.write( "the angle between them is 0.7612rad<BR>\n" );
document.write( "HOPE THIS HELPS?  </SPAN>\n" );
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