document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=809251>Question 809251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> exact value of cos2x given that sinx = (sqrt of 3)/4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #487500 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=487500\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> exact value of cos2x given that sinx = (sqrt of 3)/4<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%29=sqrt%283%29%2F4 ALIGN=MIDDLE  ALT=\"sin%28x%29=sqrt%283%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cos(2x)=1-2sin^2(x)=1-2*3/16=1-3/8=5/8 </SPAN>\n" );
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