Solve the all parts of given question:
Question: Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 69.0 degree. Dog A exerts a force of 262N, and dog B exerts a force of 340 N.
Part A: Find the magnitude of the resultant force?
Part B: Find the angle the resultant force makes with the rope of dog A?
Please show all work and clearly explain each step.