Inkiena

Sand is falling off a conveyor onto a conical pile at the rate of 15 cubic feet per minute. The diameter of the base of the cone is approximately twice the altitude. At what rate is the height of the pile changing when it is 10 feet high?

.342Dcos θ+hcos θ^2=16D^2/Vo^2

is used to reconstruct accidents in which a vehicle vaults into the air after hitting an obstruction. Vo is velocity in feet per second of the vehicle when it hits, D is distance (in feet) from the obstruction to the landing point, and h is the difference in height (in feet) between the landing point and takeoff point. Angle θ is the takeoff angle, the angle between the horizontal and the path of the vehicle.

Find θ to the nearest degree if Vo=60, D=80, and h=2.

I know how to set up the equation but upon going through it to find an answer I am a bit confused, thank you for trying to help me :)

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steph_clarke2005@yahoo.com

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Plus my last question of this I accidentally deleted :(

Plz ive been looking for someone to let me have one!!