document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=880153>Question 880153</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given triable ABC with b=21 feet, c=13 feet and a=17 feet. find the measure of angle A </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #531244 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=531244\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Angle A is between the sides b and c.  Angle A would be understood opposite positionally from side a.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E2%2Bc%5E2-2ac%2Acos%28A%29=a%5E2 ALIGN=MIDDLE  ALT=\"b%5E2%2Bc%5E2-2ac%2Acos%28A%29=a%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > symbolically for your particular example.<BR>\n" );
document.write( "(Law of Cosines) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );