Q: To find the two possible values of cos(x) from a given value of sin(x) you would use??
Hey all, I have a theory question using Trig Laws (and need to know if i'm right)
Q: To find the two possible values of cos(x) from a given value of sin(x) you would use??
my answ: The sum and difference of angles;
ie/ sin(A+B) = sinAcosB+cosAsinB
or sin(A-B)=sinAcosB-cosAsinB
is that right?
also- just to be sure- AAA (given three angles..) You can't find a side of a triangle right?
Thanks guys!!
-Brittany