document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=256629>Question 256629</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The x-direction cosine of a line is -5/13 and the y-direction cosine, c2, is positive. What is c2?<BR>\n" );
document.write( "Please help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188732 by </B><A HREF=/tutors/aboutme.mpl?userid=drk><B>drk(1908)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drk><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=188732\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If the x direction of cosine is -5/13, then we have 2 options for the y direction. The y direction is called sine not cosine.<BR>\n" );
document.write( "cos(x) = -5/13<BR>\n" );
document.write( "sin(x) = +-12/13<BR>\n" );
document.write( "sin^2(x) = 144/169.<BR>\n" );
document.write( "I hope that is what you wanted. </SPAN>\n" );
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