document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=950607>Question 950607</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine the value of sin2x if secx=a/b , where tanx<0 and secx>0 \r<BR>\n" );
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document.write( "I know that sin2x= 2sincos </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #580487 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=580487\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine the value of sin2x if secx=a/b , where tanx<0 and secx>0 <BR>\n" );
document.write( "I know that sin2x= 2sincos<BR>\n" );
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document.write( "reference angle x is in quadrant IV where cos>0, sin<0,tan<0<BR>\n" );
document.write( "secx=a/b<BR>\n" );
document.write( "cosx=b/a<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sinx=-sqrt%281-cos%5E2%28x%29%29=-sqrt%281-%28b%5E2%2Fa%5E2%29%29=-sqrt%28%28a%5E2-b%5E2%29%2Fa%5E2%29=-sqrt%28a%5E2-b%5E2%29%2Fa ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin2x=2sinxcosx=-2%28sqrt%28a%5E2-b%5E2%29%2Fa%29%28b%2Fa%29=-sqrt%28a%5E2-b%5E2%29%282b%2Fa%5E2%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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