I get by on memorising 2 triangles and the general shapes of the functions.
Anybody out there have a good acronym, or system for remembering the values of the trig functions at the special angles(e.g. ? I'v got a test coming up that's being timed, so I can't be reproving them while taking the test.
Could you elaborate. Are talking about equilateral and isosoles triangles, where the equilateral has each side equal to 2? And the isosoles with legs=1, and hypotenuse= ?
But, that's kind of like having to reprove the thing to myself again, whereas I would kind of like something that's much faster. Everyone knows PEMDAS. It's easy and fast.
Here's one for the trig functions themselves:
sin is opposite over hypotenuse
cos is adjacent over hypotenuse
tan is opposite over adjacent
This is what I'm after.
I also put to memory the function shapes over one cycle of sine, cos and tan. This helps you solve for .