document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=888594>Question 888594</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The following identity IS correct. Choose whether or not the following statements is true or false.\r<BR>\n" );
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document.write( "The Pythagorean identity sin^2(x)+cos^2(x)= 1 is useful in proving the identity tan(x)+sec(x)= (cos(x)/(1-sin(x)))\r<BR>\n" );
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document.write( "true or false </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #537716 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=537716\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The Pythagorean identity sin^2(x)+cos^2(x)= 1 is useful in proving the identity tan(x)+sec(x)= (cos(x)/(1-sin(x)))<BR>\n" );
document.write( " true or false<BR>\n" );
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document.write( "tan(x)+sec(x)= (cos(x)/(1-sin(x)))<BR>\n" );
document.write( "(sin/cos) + 1/cos = cos/(1-sin)<BR>\n" );
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document.write( "(1+sin)/cos = cos/(1-sin)<BR>\n" );
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document.write( "Cross multiply to get :<BR>\n" );
document.write( "cos^2 = 1-sin^2<BR>\n" );
document.write( "cos^2(x) + sin^2(x) = 1<BR>\n" );
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document.write( "Ans :: true<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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