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4 years ago

John is skiing on a mountain with an altitude of 1200 feet. The angle of depression is 21 About how far does

Mathematics

1 answer:

Agata [3.3K]4 years ago

7 0

Answer:

John ski down the mountain is 1285.37 feet.

Step-by-step explanation:

Given : John is skiing on a mountain with an altitude of 1200 feet. The angle of depression is 21.

To find : About how far does John ski down the mountain ?

Solution :

We draw a rough image of the question for easier understanding.

Refer the attached figure below.

According to question,

Let AB be the height of mountain i.e. AB=1200 feet

The angle of depression is 21 i.e. $\theta=21^\circ$

We have to find how far does John ski down the mountain i.e. AC = ?

Using trigonometric,

$\cos\theta = \frac{AB}{AC}$

$\cos(21)= \frac{1200}{AC}$

$AC=\frac{1200}{\cos(21)}$

$AC=1285.37$

Therefore, John ski down the mountain is 1285.37 feet.

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3 years ago

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Answer:

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Step-by-step explanation:

The (1 - α)% confidence interval for the population standard deviation is:

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*Use a Chi-square table.

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