A flag staff on the top of the tower 80 ...

A flag staff on the top of the tower 80 mt of height subtends an angle `Tan^-1 (1//9)` at a point on the ground 100 mt from the foot of the tower. The height of the flag staff is

19 mt

20 mt

21 mt

22 mt

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DIPTI PUBLICATION ( AP EAMET)-PROPERTIES OF TRIANGLES -EXERCISE 1C

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