Question

what is the net difference in angle made by hour and minute hand when time moves from 1:15 pm to 1:16 pm

Answer 1

Time moves from 1:15 pm to 1:16 pm.
It means change in time = 1 min =$\frac{1}{60}$hour
Angle traced by hour hand in 12 hrs = 360$°$
So angle traced by hour hand in $\frac{1}{60}$hour = $\frac{360°}{12}\times \frac{1}{60}=0.5°$
Now angle traced by minute hand in 60 minutes = ​360$°$
So angle traced by minute hand in 1 min = $\frac{360°}{60}\times 1=6°$
Hence the net difference in angle made by hour hand and minute hand = $6°-0.5°=5.5°$