Answer in cm not in ij or xy With the diagram and the data a

Answer in cm not in i+j or (x,y)!

With the diagram and the data answer the question: What is the magnitude of A + B?

Solution

A = 3.6(i*cos33.9 + j*sin33.9) = 2.988i + 2j

B = 8(i*cos140.5 +j*sin140.5) = -6.17i + 5.1j

A+B = -3.18i + 7.1j

Mangnitudeof A+B = sqrt( 3.18^2 +7.1^2) = 7.78cm