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December 20, 2014

December 20, 2014

Posted by **Al B.** on Saturday, January 21, 2012 at 3:49pm.

hand, the minute hand, and the second hand on a clock.

- Trig -
**Reiny**, Saturday, January 21, 2012 at 5:15pm1 hours = 60 minutes = 3600 seconds

I will do one of them for you, you try the others

angular speed of hour hand:

= 1 rotation/ per 12 hrs

= 2π radians/12(3600) seconds

= (π/21600) radians/second

or

= 360° degrees /12 hrs

= (360/12(3600)° / second

= 1/120 degrees/second

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