document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=822716>Question 822716</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Prove the identity:\r<BR>\n" );
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document.write( "A) Sinx( sec x-csc x) = tanx-1<BR>\n" );
document.write( "B) (cot x-1)^2 = 1-sin2x/ sin^2 x\r<BR>\n" );
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document.write( "Thaaaank you!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #495170 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=495170\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Prove the identity:<BR>\n" );
document.write( "A) Sinx( sec x-csc x) = tanx-1<BR>\n" );
document.write( "start with left side:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%29%281%2Fcos%28x%29%29-%281%2Fsin%28x%29%29=sin%28x%29%2Fcos%28x%29-sin%28x%29%2Fsin%28x%29=tan%28x%29-1 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "verified:left side=right side<BR>\n" );
document.write( "..<BR>\n" );
document.write( "B) (cot x-1)^2 = 1-sin2x/ sin^2 x<BR>\n" );
document.write( "stare with left side:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28cot%28x%29-1%29%5E2=cot%5E2%28x%29-2cot%28x%29%2B1=cos%5E2%28x%29%2Fsin%5E2%28x%29-2cos%28x%29%2Fsin%28x%29%2B1=%28cos%5E2%28x%29-2cos%28x%29sin%28x%29%2Bsin%5E2%28x%29%29%2F%28sin%5E2%28x%29%29=%281-sin%282x%29%29%2Fsin%5E2%28x%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "verified:left side=right side </SPAN>\n" );
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