document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1198034>Question 1198034</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Could you please help me with this question? \r<BR>\n" );
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document.write( "Write sin t in terms of sec t ; quadrant IV\r<BR>\n" );
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document.write( "[ request to tutors: I am confused about whether we have a positive or negative sign in such problems. If you could please explain the steps I would greatly appreciate it]  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #831551 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52793)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=831551\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "Hey, there is no any need to memorize the signs of trigonometry functions in four quadrants.\r<BR>\n" );
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document.write( "Saying honestly, I think that it is impossible to memorize, if you do not understand the meaning of trigonometry functions,<BR>\n" );
document.write( "and there is no need to memorize (no need to fill your mind by the stuff which you do not understand): it is bad way of teaching.\r<BR>\n" );
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document.write( "You need to imagine mentally the unit circle as a watch clock face.\r<BR>\n" );
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document.write( "The sine function sin(t) is vertical coordinate of the arrow's end: <BR>\n" );
document.write( "it is in positive domain in Q1 and Q2 and in negative domain in Q3 and Q4.\r<BR>\n" );
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document.write( "Similar for the cosine function cos(t): it is horizontal coordinate of the arrow's end,<BR>\n" );
document.write( "and therefore it is positive in Q1 and Q4 and negative in Q2 and Q3.\r<BR>\n" );
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document.write( "As soon as you understand it, the way is open for you to move forward,<BR>\n" );
document.write( "and your mind is free from the useless stuff.\r<BR>\n" );
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