Answer:
90 degrees
Step-by-step explanation:
by observing a clock face, we can see that when the second hand goes one complete round (i.e in 1 minute = 60s) it would have turned 360 degrees.
we also notice that in 15 seconds, the pointer would have turned 1/4 of the clock face (e.g from 12 to 3)
hence the angle it turns in 15 sec
= 1/4 of the clock face
= 1/4 of 360 degrees
= 360/4
= 90 degrees
