document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=737549>Question 737549</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the given information to find cos 2x, sin 2x, and tan 2x. (Enter your answers in exact form.)\r<BR>\n" );
document.write( "\n" );
document.write( "cos x = sqrt(2)/7   ,3&#960;/2 < x < 2&#960;\r<BR>\n" );
document.write( "\n" );
document.write( "a)cos 2x\r<BR>\n" );
document.write( "\n" );
document.write( "b)sin 2x\r<BR>\n" );
document.write( "\n" );
document.write( "c)tan 2x\r<BR>\n" );
document.write( "\n" );
document.write( "I know that for cos 2x, the answer will be #/49 but that is really as far as I got </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #450521 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=450521\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the given information to find cos 2x, sin 2x, and tan 2x. (Enter your answers in exact form.) <BR>\n" );
document.write( "cos x = sqrt(2)/7 ,3&#960;/2 < x < 2&#960; <BR>\n" );
document.write( "a)cos 2x <BR>\n" );
document.write( "b)sin 2x <BR>\n" );
document.write( "c)tan 2x <BR>\n" );
document.write( "***<BR>\n" );
document.write( "let O=opposite side<BR>\n" );
document.write( "let A=adjacent side<BR>\n" );
document.write( "let H=hypotenuse<BR>\n" );
document.write( "..<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%29=sqrt%282%29%2F7=A%2FH ALIGN=MIDDLE  ALT=\"cos%28x%29=sqrt%282%29%2F7=A%2FH\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=sqrt%282%29%2C+H=7 ALIGN=MIDDLE  ALT=\"A=sqrt%282%29%2C+H=7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=O=sqrt%28H%5E2-A%5E2%29=sqrt%2849-2%29=sqrt%2847%29 ALIGN=MIDDLE  ALT=\"O=sqrt%28H%5E2-A%5E2%29=sqrt%2849-2%29=sqrt%2847%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%29=O%2FH=sqrt%2847%29%2F7 ALIGN=MIDDLE  ALT=\"sin%28x%29=O%2FH=sqrt%2847%29%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%29=O%2FA=sqrt%2847%29%2Fsqrt%282%29 ALIGN=MIDDLE  ALT=\"tan%28x%29=O%2FA=sqrt%2847%29%2Fsqrt%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%282x%29=cos%5E2%28x%29-sin%5E2%28x%29=%282%2F49%29-%2847%2F49%29=-45%2F49 ALIGN=MIDDLE  ALT=\"cos%282x%29=cos%5E2%28x%29-sin%5E2%28x%29=%282%2F49%29-%2847%2F49%29=-45%2F49\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%282x%29=2sin%28x%29cos%28x%29=2%2Asqrt%2847%29%2F7%2Asqrt%282%29%2F7=2sqrt%2894%29%2F49 ALIGN=MIDDLE  ALT=\"sin%282x%29=2sin%28x%29cos%28x%29=2%2Asqrt%2847%29%2F7%2Asqrt%282%29%2F7=2sqrt%2894%29%2F49\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%282x%29=%282tan%28x%29%29%2F%281-tan%5E2%28x%29%29=%282sqrt%2847%29%2Fsqrt%282%29%29%2F%281-47%2F2%29=%282sqrt%2847%29%2Fsqrt%282%29%29%2F%28-45%2F2%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );