document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=764992>Question 764992</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve the equation cos theta - tan theta * cos theta = 0 for 0< theta < 2 pi </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #465879 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=465879\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given:<BR>\n" );
document.write( "(1) cosx - tanx*cosx = 0 or factoring becomes<BR>\n" );
document.write( "(2) cosx*(1 - tanx) = 0<BR>\n" );
document.write( "When the product of two factors is zero, the solution is that either or both factors can be equal to zero. In this case we can have<BR>\n" );
document.write( "(3) cosx = 0 and/or<BR>\n" );
document.write( "(4) 1 - tanx = 0<BR>\n" );
document.write( "The solution to (3) is<BR>\n" );
document.write( "(5) x = pi/2 and 3*pi/2<BR>\n" );
document.write( "The solution to (4) is<BR>\n" );
document.write( "(6) tanx = 1 or<BR>\n" );
document.write( "(7) x =  pi/4 and 3*pi/4<BR>\n" );
document.write( "Answer: theta = (pi/4,pi/2,3*pi/4,3*pi/2) or (45,90,225,270) degrees </SPAN>\n" );
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