document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=142690>Question 142690</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321356934/algebrahomeworkh>Precalculus </A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me with this question? Find the measue of angel C in the triangle with the following dimensions a= 28, b= 35, c= 17<BR>\n" );
document.write( "a. 52.16<BR>\n" );
document.write( "b. 42.39<BR>\n" );
document.write( "c. 28.65<BR>\n" );
document.write( "d. 31.72<BR>\n" );
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 #103839 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=103839\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the measue of angel C in the triangle with the following dimensions a= 28, b= 35, c= 17<BR>\n" );
document.write( "a. 52.16<BR>\n" );
document.write( "b. 42.39<BR>\n" );
document.write( "c. 28.65<BR>\n" );
document.write( "d. 31.72<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Law of Cosines:<BR>\n" );
document.write( "Cos(C) = (a^2+b^2-c^2)/2ab<BR>\n" );
document.write( "Cos(C) = (28^2+35^2+17^2)/(2*28*35) = 0.8775510...<BR>\n" );
document.write( "C = cos^-1(0.8775510..) = 28.65<BR>\n" );
document.write( "=================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );