![]() ![]() One way is to memorize the signs for the different trig functions in the four quadrants. There are ways of reconstructing the information if you forget. In the case of the symmetry relationships, it is a great time-saver to know these. Sometimes it is just plain easier to memorize a couple of formulas than to try to dig back to the basics and reconstruct the formulas. ![]() ![]() No, you can get through a lot of math without memorizing, but it just takes a lot longer to do the problems. ![]()
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