Question 1198034
<pre>
"Hey, there is no any need to memorize the signs of trigonometry functions in four
quadrants."

Why not?  It's too much trouble to have to go through every time to think of
whether it's a positive over a positive, a positive over a negative, a negative
over a positive, or a negative over a negative.  Of course they can do that, but
on a test, they need to save time, not waste time going through the 4 sign facts
every time.

You may as well tell them there is no need to memorize the quadratic formula
because all they need do is complete the square.

Edwin</pre>