Can someone answer my last question. I really need to know this stuff for my trig test. How to remember the law of cosines? c squared equals b squared + a squared or something.
any side a^2=b^2+c^2-2b*cos(A) for any
for finding angles \(Cos(A)=b^2+c^2-a^2\over 2bc\)
+709 
