On the clock face, if the minute hand rotates for one circle, then the angle of the clockwise rotation is () degrees

On the clock face, if the minute hand rotates for one circle, then the angle of the clockwise rotation is () degrees

Minute hand a week is 60 minutes, that is an hour, a week is 12 hours, 360 degrees, so an hour is 30 degrees. 30 degrees, very good calculation, 360 / 12, each integral point is a grid, if there is any in the middle,