Work out the sum of the column vectors

Work out a + b + d as a single column vector

Find the magnitude of c + d

Find the magnitude of the column vector

Find BA in terms of a and b

C is the midpoint of AB. Find OC in terms of a and b

Y is the midpoint of AB and X is the midpoint of OA. OX has a vector of a.

Find CY in terms of a, b and c

X is the midpoint of OA and Y is the midpoint of AB. OX has a vector of a.

Find BA in terms of a, b and c.

Find CX in terms of a and b