document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=864414>Question 864414</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the given information to find each value\r<BR>\n" );
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document.write( "cos t = 5/13 , 0 < t < pi/2\r<BR>\n" );
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document.write( "cos 2t=\r<BR>\n" );
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document.write( "sin 2t =\r<BR>\n" );
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document.write( "cos t/2 = \r<BR>\n" );
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document.write( "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 #520986 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=520986\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the given information to find each value <BR>\n" );
document.write( "cos t = 5/13 , 0 < t < pi/2 <BR>\n" );
document.write( "cos 2t= <BR>\n" );
document.write( "sin 2t = <BR>\n" );
document.write( "cos t/2 = <BR>\n" );
document.write( "sin t/2 =<BR>\n" );
document.write( "***<BR>\n" );
document.write( "You are working with a (5-12-13) reference right triangle in quadrant I.<BR>\n" );
document.write( "sin t =12/13<BR>\n" );
document.write( "cos 2t=cos^2t-sin^2t=25/169-144/169=-119/169<BR>\n" );
document.write( "sin 2t=2sin t*cos t=2*12/13*5/13=120/169<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28t%2F2%29=sqrt%28%281-cos+t%29%2F2%29=sqrt%28%281-%285%2F13%29%2F2%29%29=sqrt%28%28%288%2F13%29%2F2%29%29=sqrt%288%2F26%29=sqrt%284%2F13%29=2%2Fsqrt%2813%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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