document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=87036>Question 87036</A>: <I><SPAN STYLE=\"word-break: break-all;\">  please help me with my homework:  using exact values, verify that cos 60 degrees = 1 - 2 sin^2 30 degrees. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #63000 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=63000\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> verify that cos 60 degrees = 1 - 2 sin^2 30 degrees.<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "cos 60 = 1/2<BR>\n" );
document.write( "sin 30 = 1/2<BR>\n" );
document.write( "Your Problem:<BR>\n" );
document.write( "1/2 = 1 - 2(1/2)^2<BR>\n" );
document.write( "1/2 = 1 - 2*(1/4)<BR>\n" );
document.write( "1/2 = 1 - 1/2<BR>\n" );
document.write( "1/2 = 1/2<BR>\n" );
document.write( "==============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );