document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=817520>Question 817520</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the given values to evaluate (If possible) all six trigonometric functions:<BR>\n" );
document.write( "Cos(-x)=(8/17),sin x<0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #492112 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=492112\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the given values to evaluate (If possible) all six trigonometric functions:<BR>\n" );
document.write( "Cos(-t) = (8/17) , sin(t) < 0<BR>\n" );
document.write( "sin(t) is negative in QIII and in QIV<BR>\n" );
document.write( "cos(-t) is positive in QIV<BR>\n" );
document.write( "x is positive and y is negative in QIV<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "cos = x/r so x = 8 and r = 17<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Therefore y = sqrt[17^2-8^2] = 15<BR>\n" );
document.write( "So, y is -15<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "sin(t) = y/r = -15/17<BR>\n" );
document.write( "cos(t) = x/r = 8/17<BR>\n" );
document.write( "tan(t) = y/x = -15/8<BR>\n" );
document.write( "----<BR>\n" );
document.write( "csc(t) = r/y = -17/15<BR>\n" );
document.write( "sec(t) = r/x = 17/8<BR>\n" );
document.write( "cot(t) = -8/15<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" );