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You fly a hot air balloon 5.0 miles above the ground. What is the measure of BD⌢BD⌢, the portion of Earth that you can see? Round your answer to the nearest tenth. (Earth's radius is approximately 4000 miles.)

 Apr 14, 2020
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arccos   4000 / 4005 =  2.863o

 

(2.863 x 2)/360      x    4000 pi   = ~~ 200 miles

 

 Apr 14, 2020
edited by ElectricPavlov  Apr 14, 2020
edited by ElectricPavlov  Apr 14, 2020

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