document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=596101>Question 596101</A>: <I><SPAN STYLE=\"word-break: break-all;\"> using pythagorean identity to siplify the following expressions.<BR>\n" );
document.write( "a)   cos^2 30 degrees + sin^2 30 degrees<BR>\n" );
document.write( "b)   cos^2 50 degrees + cos^2 40 degrees<BR>\n" );
document.write( "c)   1 - sin^2 20 degrees </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #377656 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=377656\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) 1<BR>\n" );
document.write( "b) cos^2 (40) = sin^2 (50), 1<BR>\n" );
document.write( "c) Rewrite 1 as sin^2 (20) + cos^2 (20), ans is cos^2 (20) </SPAN>\n" );
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