document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=269123>Question 269123</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hoping someone will help me with a few more. I need to see the steps:)\r<BR>\n" );
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document.write( "Verify:<BR>\n" );
document.write( "a)sinx(sinx+cscxcos^2x)=1<BR>\n" );
document.write( "b)tanx((cotx/cosx)-sinx)=cosx<BR>\n" );
document.write( "c)(1+cosx)(1-cosx)=sin^2x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #197255 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=197255\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Verify:<BR>\n" );
document.write( "a)sinx(sinx+cscxcos^2x)=1<BR>\n" );
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document.write( "sin^2(x) + (1)cos^2(x) = 1<BR>\n" );
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document.write( "sin^2(x) + cos^2(x) is always 1, so you get:<BR>\n" );
document.write( "1 = 1<BR>\n" );
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document.write( "b)tanx((cotx/cosx)-sinx)=cosx<BR>\n" );
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document.write( "tan(x)[(1/tan(x))/cos(x) - sin(x)) = cos(x)<BR>\n" );
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document.write( "(1/cos(x) - sin(x) = cos(x)<BR>\n" );
document.write( "Multiply thru by cos(x) to get:<BR>\n" );
document.write( "1 - cos(x)sin(x) = cos^2(x)<BR>\n" );
document.write( "This is not an identity.<BR>\n" );
document.write( "The left side of the original eq. does not equal the right side.<BR>\n" );
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document.write( "c)(1+cosx)(1-cosx)=sin^2x<BR>\n" );
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document.write( "1-cos^2(x) = sin^2(x)<BR>\n" );
document.write( "sin^2(x) = sin^2(x)<BR>\n" );
document.write( "=============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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