Tuesday, July 19, 2011

what degree is the angle when it's 3:15?

1 hour is 360 / 12 = 30 degrees,  in 1 hour will move of 30 degrees. Therefore in 15 minutes, 0.4 x 30 = 7.5 degrees. The key observation is that the hour will move when you go to 15 mins.

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