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°

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

  A. -300º
 

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