Question

anybody know an easy way to memorize the laws of cosine functions?

Answer 1

What sort of cosine functions?

Answer 2

U mean sohcahtoa?

Answer 3

U there?

Answer 4

If you just mean the trigonometric functions, I remember SohCahToa
S: Sine- is oh, or opposite over hypotenuse.
C: Cosine- is ah, or adjacent over hypotenuse.
T: Tangent- is oa, or opposite over adjacent.

Answer 5

I think he means the law of cosines.
\[c ^{2}=a ^{2}+b ^{2}-2ab \cos C\]
etc.

I say write it out many times. Often that can aid in memorization. Also, flash cards.

Answer 6

Oooh yes. You're right that's probably what he means. Remember the pythagorean theorem to start with. I don't know a good trick for remembering the last part though.

Answer 7

sorry, yes i meant the law, not socatoa

Answer 8

thanks simplephyiscs