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From a balloon 760 feet high, the angle of depression to the ranger headquarters is 89°18'. How far is the headquarters from a point on the ground directly below the balloon (to the nearest foot)?
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From a balloon 760 feet high, the angle of depression to the ranger headquarters is 89°18'. How far is the headquarters from a point on the ground directly below the balloon (to the nearest foot)?

User Jannchie
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1 Answer

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tanα=h/d

d=h/tanα, h=760 and α=89°+18'(1°/60')=89.3°

d=760/tan89.3° ft

d≈9 ft
User MidnightBlue
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