document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=977350>Question 977350</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A triangle has sides a = 6, c = 8, and angle B = 125° Determine 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 #598895 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=598895\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "First, you should find out what<BR>\n" );
document.write( "b =.<BR>\n" );
document.write( "Using Cosine Rule<BR>\n" );
document.write( "b^2 = a^2 + c^2 - 2ac CosB<BR>\n" );
document.write( "b^2 = 36 + 64 -(2 * 6 * 8 * cos 125)<BR>\n" );
document.write( "b^2 = 100 - (-55.0633)<BR>\n" );
document.write( "b^2 = 155.0633<BR>\n" );
document.write( "b = square root of 155.0633<BR>\n" );
document.write( "b = 12.5 (1 decimal place)<BR>\n" );
document.write( "Now using Sine Rule<BR>\n" );
document.write( "a/SinA = b/SinB<BR>\n" );
document.write( "6/SinA = 12.5/sin125<BR>\n" );
document.write( "Cross multiply<BR>\n" );
document.write( "6 * sin125 = 12.5sinA<BR>\n" );
document.write( "SinA = 6*sin125/12.5<BR>\n" );
document.write( "SinA = 0.3932<BR>\n" );
document.write( "Sin^-1A = 23.2 degrees (i decimal place)<BR>\n" );
document.write( "Hope this helps:-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );