document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=123269>Question 123269</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Law of cosines<BR>\n" );
document.write( "solve the triangle.  Round lengths of sides to the nearest tenth and measures of angles to the nearest degree\r<BR>\n" );
document.write( "\n" );
document.write( "a=16, b=20, m angle B=40 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #90436 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=90436\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve the triangle. Round lengths of sides to the nearest tenth and measures of angles to the nearest degree <BR>\n" );
document.write( "a=16, b=20, m angle B=40<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "sin(A)/a = sin(B)/b<BR>\n" );
document.write( "sin(A) = 16[sin(40)/20]<BR>\n" );
document.write( "sin(A) = 0.5142<BR>\n" );
document.write( "A = 30.5142 degrees<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "C = 180-(30.5142+40)= 109.054 degrees<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "c = a^2+b^2-abcos(C)<BR>\n" );
document.write( "c^2 = 16^2 + 20^2 - 16*20cos(109.054)<BR>\n" );
document.write( "c = 27.623<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );