Question

Cand D are two observation posts on the same horizontal ground at the foot A of a vertical tower AB.the tower is 18m due north of D and 24m east of C.the angle of elevation of B from D is 35¡ã.calculate to three s.f the height AB,distance CD,angle of elevation from C,bearing of C from D

Answer 1

As always, draw a diagram.

AB/18 = tan35°
CD^2 = 18^2 + 24^2
from C, tanθ = AB/24
from D to C, tanθ=24/18, so the bearing is 360-θ

Answer 2

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Answer 3

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Answer 4

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Answer 5

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Answer 6

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Answer 7

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Answer 8

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Answer 9

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