Applying the compound angle formula to Cartesian Geometry, we find a way to find the size of the angle between any two lines.
lesson notes:03 angle between two lines
Applying the compound angle formula to Cartesian Geometry, we find a way to find the size of the angle between any two lines.
lesson notes:03 angle between two lines
How to “expand” trig of a compound angle
lesson notes:02 sum & difference of angles