How do you learn cos sin and tan formulas? - Answers

I guess you are meaning the standard trigonometric ratios regarding the cos/sin/tan of angles in a right angled triangle. I was taught this little rhyme: Two Old Arabs Soft Of Heart Coshed Andy Hatchett Using the initial letters of each of the words: T O A S O H C A H Gives: Tan = Opposite / Adjacent Sin = Opposite / Hypotenuse Cos = Adjacent / Hypotenuse Later I met the nonsense word SOHCAHTOA (pronounced So-ka-toe-ah or Sock-a-toe-ah) in which the letters are the ratios as before and which is slightly more useful in that in that order it gives a reminder that Sin/Cos = Tan. However, it does require being able to spell the unusual "word".