document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=885405>Question 885405</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if sin theta +sin ^2 theta =1 prove that cos^2 +cos^4=1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #535177 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=535177\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sin theta +sin ^2 theta =1 prove that cos^2 +cos^4=1\r<BR>\n" );
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document.write( "sin (theta) +sin ^2 (theta) =1 \r<BR>\n" );
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document.write( "sin (theta) +1-cos ^2 (theta) =1 \r<BR>\n" );
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document.write( "sin (theta) -cos ^2 (theta) =0\r<BR>\n" );
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document.write( "sin (theta) =cos ^2 (theta)\r<BR>\n" );
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document.write( "square both sides\r<BR>\n" );
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document.write( "sin^2 (theta) =cos ^4 (theta)\r<BR>\n" );
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document.write( "1-cos ^2 (theta)= cos ^4 (theta)\r<BR>\n" );
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document.write( "cos ^4 (theta)+cos ^2 (theta)=1\r<BR>\n" );
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