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height of a flagpole

Mathematics
Tutor: None Selected Time limit: 1 Day

if the two people are the same distance from the pole and 25 feet from each other, find the height of the pole if the angle of elevation from the ground to the top of the pole at each person's position is 56 degrees.

Oct 1st, 2014

It is possible when the two persons stand at say north of the pole or east of the pole since the angle of elevation is the same.

The distance between them is 25 feet.

They are standing at 25/sqrt(2)= 17.68 from the bottom of the pole 

Let the height of the flag is x feet

x/17.68 =tan(56 degrees) 

tan (56 degrees) =1.4825

x =17.56 * tan (56 degrees) =17.56*1.4825= 26.208 =26.2

Answer: height of the flagpole =26.2 feet

Reference for the figure:

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Oct 1st, 2014

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