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August 2, 2015

Homework Help: calculus

Posted by nico on Sunday, November 11, 2012 at 11:23pm.

If the hands on a clocktower's clock are 2ft and 3ft long, how fast is the distance between the tips of the hands of the clock changing at 9:20?
I know that the derivative of the minute hand is pi/30 rad/min and derivative of the hour hand is pi/360 rad/min.
what is the equation i have to take the derivative of to find dtheta/dt?

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