Posted by **Chris** on Saturday, December 8, 2007 at 10:00pm.

Please help!

Find the point where the curve

r(t) = (12sint)i -(12cost)j +5k

is at a distance 13pi units along the curve from the point (0,-12,0) in the direction opposite to the direction of increasing arc length.

(Hint: ty -13pi for arc length)

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