Law of Sines and The Law of Cosines

The word best associated with the Law of Sines is PROPORTIONALITY

a b c
___ = ______ = ______

sin A sin B sin C


It can also be flipped upside down (or right side up if you prefer) to read:

sin A sin B sin C
_____ = ______ = ______

a b c


By the way, you can use just two out of the three at any time ;)



Law of Cosines

Please see the posting from Thursday 2/22/07 re: Trigonometry