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## Homework Statement

"On a certain clock the minute had is 4in long, and the hour hand is 3in long. How fast is the distance between the tips of the hands changing at 9 o'clock?"

## Homework Equations

- a[tex]^{2}[/tex] + b[tex]^{2}[/tex] = c[tex]^{2}[/tex]

- Law of Cosines?

## The Attempt at a Solution

Ok i drew a clock, and the 3-4-5 triangle positioned at 9:00. The distance between the 2 tips is 5in, but how would I find the rate of change between them? If the distance is marked by x, then I'm solving for dx/d[tex]\Theta[/tex], right? For every 6 degrees the minute hand moves, the hour hand moves one. I'm thoroughly confused........