for 16a), instead of using mok's method which seems like the right one, I assumed that the centres of the triangles was the origin, and just worked with c = (e^(i2π/3))b and a = (e^(-i2π/3))b. How many marks do u guys think i would lose given ii) is 2 marks and iii) is 3 marks?
(from Mok's...