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April 19, 2015

April 19, 2015

Posted by **bill** on Wednesday, November 12, 2008 at 8:07pm.

- calculus -
**bobpursley**, Wednesday, November 12, 2008 at 8:18pmtan(elevation)=4000/x

d/dx tanE =-4000/x^2 dx/dt

but d/dttanE= sec^2E * dE/dt

finally...

sec^2 E * dE/dt=-4000/x^2 dx/dt

solve for dE/dt when x=2000, You can figure secE from the triangle. You are given dx/dt as 500ft/sec

- calculus -
**Anonymous**, Friday, May 25, 2012 at 9:22amv vasdfvfv

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