Question

Ques:
The cosine of the angle swept by the minute hand of a clock in 20 minutes is what ?​

Answer 1

Answer:

Angular speed of the minute hand of a clock = (360 / 60) degrees / minute = 6 degrees / minute.

So, in a span of 20 minutes; the minute hand sweeps through an angle of (6 * 20) degrees = 120°.