Make a scale drawing to answer the question

Question

A boy starts at A and walks 3km east of B he then walks 4km north to c find the distance and bearing of c from a

Answer 1

did you make the drawing? If so, you should easily recognize a 3-4-5 right triangle.
C is 5 km from A
the bearing of C from A is 90-arctan(4/3) = 37°

Answer 2

I don't understand it