A long horizontal wire carries 16.0 A of current due north.
A. What is the absolute value of the net magnetic field 21.0 cm due west of the wire if the Earth's field there points north but downward, 47degrees below the horizontal, and has magnitude 5.0 times 10^-5 T?
B. What is the angle of the net magnetic field 21.0 cm due west of the wire if the Earth's field there points north but downward, 47degrees below the horizontal, and has magnitude 5.0 times 10^- 5?