Question

If `vecA,vecB,vecC` represents the three sides of an equilateral triangle taken in the same order then find the angle between
(i) `vecA` and `vecB` (ii) `vecB` and `vecC` (iii) `vecA` and `vecC`.

Answer 1

From the diagram the angle between vectors `vecA` and `vecB` is `120^(@)`, between `vecB` and `vecC` is `120^(@)` and between `vecA` and `vecC` is `120^(@)`