How to find components of a vector given magnitude and angle?

Find an equation of the line perpendicular to the graph.

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Based on the figures as marked, /\rqs = —