The angle between the hour hand and the minute hand, when the time is 6:30 is
In one hour, the minute hand covers 360∘ and the hour hand covers 30∘. When the minute hand covers 180∘, the hour hand covers 15∘. So at 6:30, minute hand covers 180∘ and hour hand covers 195∘. The angle included between the minute and hour hand at 6:30 is 15∘.