A simple angle of elevation problem...
You want to find out the height of a tree. You measure the distance from you to the base and find that it is 100 feet. You measure the angle of elevation of the top and find that it is 30 degrees. You are six feet tall. How tall is the tree?
Answer: The tree is 64 feet tall. Its height is tangent 30 times 100 + 6.
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altitude
The greek word for angle is "γωνία" (ghoneea).
No, the noun 'elevation' is a common noun; a general word for a height above a given level; a general word for the height to which something is raised; a general word for an act of raising someone or something in level; a word for any elevation of any kind.A proper noun is the name or title of a specific person, place, or thing; for example, Elevation Hotel & Spa in Crested Butte, CO or Elevation Road in Benson, NC.
Angle.
I like the right angle because it is easy to identify.