Mathematics for IGCSE & O level - Vectors (Section 5 - No. 47)

If vector a = [4, 3], then what is the unit vector of a?

[1, 1]

[4/5, 3/5]

[3/5, 4/5]

[0, 0]

First find the magnitude √(4^2 + 3^2) = 5. Then divide each component by the magnitude.