Convert the following into radians 90°, 30°, 45°, 180°

90 degress -> radians= π/2

30 degress -> radians= π/6

45 degrees -> radians= π/4

180 degress -> radians= π

Explanation:

To convert degrees to radians, multiply the degree by π/180 and simplify.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it