What is the obtuse angle of 4 o'clock?

To find the obtuse angle at 4 o'clock, we first calculate the angle between the hour and minute hands. The hour hand at 4 points to 120 degrees (4 hours × 30 degrees per hour), and the minute hand at 0 minutes points to 0 degrees. The angle between them is 120 degrees, and the obtuse angle is the larger angle, which is 360 degrees - 120 degrees, resulting in an obtuse angle of 240 degrees.