document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=535168>Question 535168</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve triangle with A=70 degrees, b= 30, c= 51 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #351785 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=351785\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A=70 degrees, b= 30, c= 51<BR>\n" );
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document.write( "Use Law of Cosines:<BR>\n" );
document.write( "a^2 = b^2 + c^2 -2bc*cos(A) <BR>\n" );
document.write( "---<BR>\n" );
document.write( "a^2 = 30^2 + 51^2 - 2*30*51*cos(70)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "a^2 = 2454.42 <BR>\n" );
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document.write( "a = 49.54<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Now use the Law of sines to find angle B.<BR>\n" );
document.write( "sin(B)/b = sin(A)/a<BR>\n" );
document.write( "sin(B)/30 = sin(70)/49.54<BR>\n" );
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document.write( "sin(B) = (30/49.54)*sin(70) = 0.5691<BR>\n" );
document.write( "---<BR>\n" );
document.write( "B = arcsin(0.5691) = 34.68 degrees<BR>\n" );
document.write( "=======================================<BR>\n" );
document.write( "Then C = 180-(A+B)<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "====================  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );