How many degrees would the hour hand move in 4 hours?
We will use the concept of complete angle and the unitary method to find the required angle.
Answer: The hour hand moves 120 degrees in 4 hours
When the hour hand completes one revolution then it sweeps 360 degrees.
The hour hand takes 12 hours to complete one revolution.
So, angle swept in 12 hours = 360 degrees.
Angle swept in 4 hours = (30 × 4) degrees = 120 degrees