Question

What is the angle of rotation of the minute hand of a clock moving from 6:10 to 7:00?

A.
–300°
B.
–60°
C.
60°
D.
300°

Answer 1

The right answer is A) -300.

Answer 2

Because the movement of the minute han of a clock is clockwise ↓, then the angle of rotation will be negative.

1) we calculate the number of minutes from 6:10 to 7:00

number of minutes=7:00-6:10=6:60 - 6:10=50 minutes.

2)
We know that:
60 minutes of a clock have turned -360º
Then:

60 minutes of a clock------------------------- -360º
50 minutes of a clock------------------------- x

x=(50 minutes of a clock * (-360º))/60 minutes of a clock=-300º


Answer: A. -300º