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A sledding run is 300 yards long with a vertical drop of 27.6 yards. Find the angle of depression of the run, to the nearest tenth of a degree.

Verified Answer :

Answer: The angle of depression is \(84.7^{0}\)

Step-by-step explanation:

Let Ф be be the angle of depression

From the diagram below

cosФ  = adjacent / hypotenuse

where adjacent = 27.6 yards    and hypotenuse =300 yards

we will now substitute the above value into the formula;

cosФ =adjacent / hypotenuse

cosФ = \(\frac{27.6 yards}{300 yards}\)     (yards will cancel yards)

cosФ  =\(\frac{27.6}{300}\)

cosФ = 0.092

To get the angle Ф, we will have to take the \(cos^{-1}\) of both-side

\(cos^{-1}\) cos Ф  = \(cos^{-1}\) (0.092)

At the left hand side \(cos^{-1}\) cos will cancel each other leaving us with only Ф,

Hence;    Ф =  \(cos^{-1}\) (0.092)

                Ф =84.721

              Ф≈  84.7   to the nearest tenth

Therefore, the angle of depression is \(84.7^{0}\)

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