A long horizontal wire carries 26 Amp of current due north. The Earth's field 22 centimeter due west of the wire points north but downward, 47 degree below the horizontal, and has magnitude of 5.0 × 10-5 T.
a) Obtain the magnitude of the net magnetic field 22 cm due west of the wire?
b) Obtain the angle below the horizontal of the net magnetic field 22 cm due west of the wire?