Find the angle between the minute hand and the hour hand of a clock at 7.20 am

Explanation

Wee know that `7 hr 20 min=7+20/60=22/3 hr`

Angle traced by hour hand in 7 hr 20 min=`(22/3×360/12)^@=220^o`

Angle traced by the minute hand in 20 min=`(360/60×20)^@=120^@`


Hence, required angle between the two hands =`220^@−120^@=100^@`