document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=138906>Question 138906</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if sin x= 4/5, where 0<x<90, find the value of cos(x+180). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #101344 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=101344\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There is a 3,4,5 right triangle in quadrant I. The opposite is 4 and the hypotenuse is 5. sin=opp/hyp<BR>\n" );
document.write( "Add 90 deg. and it is in quadrant III.<BR>\n" );
document.write( "Cos=adj/hyp=-3/5<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
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