An access ramp from a sidewalk to a restaurant door rises 3.2 feet over a horizontal distance of 30 feet. What is the angle of elevation of the door at the top of the ramp? Which ratio (sine, cosine, or tangent) did you feature in your setup? To the nearest degree, what IS the angle of elevation of the door?

Q: ground

A: In a right angled triangle:- Tan X = Perpendicular/Base

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A: our objective is to find the angle.

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Q: 25 ft. - 42 ft.-

A: height of flagpole = 25 ft  length of shadow = 42 ft

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A: Explanation of the answer is as follows

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A: use trignometric ratio

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A: Given:

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A: The given figure is: To find x

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A: Please follow the next step.

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A: Given: The red-pine tree AB with its shadow BC = 131 ft. The angle of depression is 31o.

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Q: Use words to describe the formula for:the sine of half an angle.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.