document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=205833>Question 205833</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Evaluate the following expressions. <BR>\n" );
document.write( "Note: Your answer must be in EXACT form: it cannot contain decimals. It must be either an integer or a fraction. If the answer involves a square root write it as sqrt . For instance, the square root of 2 should be written as sqrt(2).\r<BR>\n" );
document.write( "\n" );
document.write( "sin(-2pi/3) = ?<BR>\n" );
document.write( "cos(pi/2) = ?<BR>\n" );
document.write( "tan(pi/6) = ?<BR>\n" );
document.write( "cot(pi/2) = ?<BR>\n" );
document.write( "sec(4pi/3) = ?<BR>\n" );
document.write( "csc(-pi/6) = ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #155441 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=155441\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Evaluate the following expressions. <BR>\n" );
document.write( "Note: Your answer must be in EXACT form: it cannot contain decimals. It must be either an integer or a fraction. If the answer involves a square root write it as sqrt . For instance, the square root of 2 should be written as sqrt(2). <BR>\n" );
document.write( "sin(-2pi/3) = -sin(2pi/3) = -sin(120 degrees) = -(1/2)<BR>\n" );
document.write( "cos(pi/2) = 0<BR>\n" );
document.write( "tan(pi/6) = 1/sqrt(3) or sqrt(3)/3<BR>\n" );
document.write( "cot(pi/2) = cos(pi/2)/sin(pi/2) = 0/1 = 0<BR>\n" );
document.write( "sec(4pi/3) = 1/cos(4pi/3) = 1/cos(240)= 1/-cos(60) = -2<BR>\n" );
document.write( "csc(-pi/6) = -csc(pi/6) = -1/sin(pi/6) = -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" );