- #1

cr7einstein

- 87

- 2

Chapter 2, page A35. Below the diagram on the right hand side, they give the formulae to compute unit vectors along the sides of EQUILATERAL triangle. I am unable to understand how do they get the formulas. Can anyone help? Moreover, is there a how do they get the angle as 240 degrees

in the second equation?

Please explain how are the equations derived, and how do you get the angles for unit vectors.

Thanks in advance!

vectors