two vectors A= 3.00^ + 6.00 j^ and B = 6.00^+ 2.00j^. Let counterclockwise angles be positive.

What angle A, where 0 A

What angle B, where 0 B

I need help with these three questions please!

Part A You are given two vectors A = -3.006 + 6.003 and B = 6.002 + 2.00j. Let counterclockwise angles be positive. What angle 0A, where 0 _ 0A