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You are in Paris and want to calculate the height of the Eiffel Tower. You walk 100 meters away from the Eiffel Tower and use your clinometer (which is positioned 1 meter above the ground) to measure the angle of elevation to the top of the tower. The clinometer reads 72.8 degrees. What is the height of the Eiffel Tower?
https://www.edplace.com/worksheet_info/maths/keystage4/year11/topic/1032/3438/angles-of-elevation-and-depression

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5. There is one more thing you must remember: If your clinometer is positioned at your eye level, you have to add the distance between your eyesight and the ground. 

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5. There is one more thing you must remember: If your clinometer is positioned at your eye level, you have to add the distance between your eyesight and the ground. 

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Otherwise, you will only find the distance between your eye level and the top of the building, instead of the entire building

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4. The tangent of a given angle in a right triangle is equal to the ratio of the opposite side to the adjacent side

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4. The tangent of a given angle in a right triangle is equal to the ratio of the opposite side to the adjacent side

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3. Once we know our distance from the given object and we know the angle of elevation, we can use the tangent ratio to calculate the unknown height of the object.

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3. Once we know our distance from the given object and we know the angle of elevation, we can use the tangent ratio to calculate the unknown height of the object.

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http://www.studygeek.org/trigonometry/angle-of-elevation/

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2. You will also need something to measure the horizontal distance between you and your building

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2. You will also need something to measure the horizontal distance between you and your building

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You can use a surveyors wheel (pictured below)
https://mech2group2.wordpress.com/2015/03/11/measuring-wheel/

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1. You will need a CLINOMETER to measure the angle of elevation between your eye level and the top of your chosen building.

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1. You will need a CLINOMETER to measure the angle of elevation between your eye level and the top of your chosen building.

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https://en.wikipedia.org/wiki/Inclinometer#/media/File:Clinometerlow.jpg

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TRIGONOMETRIC RATIOS can be used to measure the height of tall buildings indirectly

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TRIGONOMETRIC RATIOS can be used to measure the height of tall buildings indirectly

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https://www.daysoftheyear.com/days/skyscraper-day/