What is the measure, in degrees, of the acute angle formed by the minute hand and the hour hand on a standard clock when it indicates 9:45?
The hour hand moves at (1/2)° every minute
Let the minute hand be at 0° at 9:45
At this time the hour hand would have moved (45)(1/2)° = 22.5° since 9:00
So the acute angle = 22.5°
