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Can someone help me with this

Can someone help me with this-example-1
User DGomez
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1 Answer

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22 votes

Answer:

596.0 ft

Explanation:

The relationship between the two legs of a right triangle and an acute angle is ...

Tan = Opposite/Adjacent

The height (h) of the lighthouse is the side opposite the angles of elevation. If d is the distance between A and B, we can write two tangent relations:

tan(14°) = h/770

tan(8°) = h/(770 +d)

Equating expressions for h gives ...

770·tan(14°) = (770 +d)·tan(8°)

770(tan(14°) -tan(8°)) = d·tan(8°) . . . . subtract 770·tan(8°)

d = 770·(tan(14°)/tan(8°) -1) . . . . . divide by the coefficient of d

d ≈ 770·(1.7740609 -1) = 596.03

The distance from point A to point B is about 596.0 feet.

Can someone help me with this-example-1
User Kld
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