Ollie uses an angle measuring device on a 3-foot tripod to find the height, h, of a weather balloon above ground level, as shown in this diagram. The balloon is at a 35º angle of elevation. A radio signal from the balloon tells Ollie that the distance between the tripod and the balloon is 18,000 feet. Which expression represents the height, h, of the balloon above ground level?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Ollie uses an angle measuring device on a 3-foot tripod to find the height, h, of a weather balloon above ground level, as shown in this diagram.
The balloon is at a 35º angle of elevation. A radio signal from the balloon tells Ollie that the distance between the tripod and the balloon is 18,000 feet.

Which expression represents the height, h, of the balloon above ground level?

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