document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=383471>Question 383471</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me:<BR>\n" );
document.write( "2. If cos x=1/2, then sin x= ?<BR>\n" );
document.write( "3. If cotx=1, then x= ?<BR>\n" );
document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #271550 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=271550\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2. If cos x=1/2, then sin x= ?<BR>\n" );
document.write( "----<BR>\n" );
document.write( "If cos(x) = 1/2 then x=1 and r = 2<BR>\n" );
document.write( "Then y = sqrt(r^2-x^2) = sqrt(4-1) = sqrt(3)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "But y can be positive or negative.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "So sin(x) = y/r = sqrt(3)/2 or sin(x) = y/r = -sqrt(3)/2<BR>\n" );
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document.write( "3. If cotx=1, then x= ?<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = 45 degrees or x = 180+45 = 225 degrees<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );