Sorry if this isn't pre-calc, the education system over here is different =\ .

Just checking if I have this right as our instructions and teachings were a bit vague.

Question: Given that a = i + j and b = 2i + j, find the magnitude of each of the following vectors and the angle each makes with Ox.

(d) : 3a - 2b

My answer:

Magnitude : sqrt(26)

Angle: 101.3 degrees (3sf)