document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=808518>Question 808518</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the given information to find each value: cos t = 3/5, 0 < t < pi/2\r<BR>\n" );
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document.write( "(a) cos 2t<BR>\n" );
document.write( "(b) sin 2t<BR>\n" );
document.write( "(c) cos(t/2)<BR>\n" );
document.write( "(d) sin(t/2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #487112 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=487112\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I suspect you have a typo.<BR>\n" );
document.write( "The typical problem would give you the value of sine or cosine, plus an extra clue,<BR>\n" );
document.write( "and would ask you to find put all that.<BR>\n" );
document.write( "With an extra clue, such as sin(t)>0,<BR>\n" );
document.write( "you would be able to know both sin(t) and cos(t),<BR>\n" );
document.write( "and then you would use those values and the trigonometric identities to find the half-angle and double-angle values.  </SPAN>\n" );
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