a person stands 35 m from a flag pole. with a protractor at eye level he finds t

Question

a person stands 35 m from a flag pole. with a protractor at eye level he finds that the angle at the top of the flag pole makes with the horizontal is 25 degrees. express the height of the flag pole using trignometric function. ( the distance from his feet to his eyes is 1.7 m) a person stands 35 m from a flag pole. with a protractor at eye level he finds that the angle at the top of the flag pole makes with the horizontal is 25 degrees. express the height of the flag pole using trignometric function. ( the distance from his feet to his eyes is 1.7 m)

Explanation / Answer

above his eye level there is a traingle,

with base length of 35m .

and suppose height of flag pole is h then heigt above eye level is (h-1.7).

and line joing eye and flag upper point makes 25 degrees with horizontal.

so tan25 = (h - 1.7) / 35

h - 1.7 = 35tan25 = 16.32

h = 18.02 m

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