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September 20, 2014

September 20, 2014

Posted by **Bell** on Friday, December 7, 2012 at 3:54pm.

- calculus -
**Steve**, Friday, December 7, 2012 at 4:37pmif the balloon is at height h,

tanθ = h/50

sec^2θ dθ/dt = 1/50 dh/dt

at h=120,

(5/13)^2 dθ/dt = 4/50

dθ/dt = 4/50 * 169/25 = 676/1250 = 0.54 rad/s

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