a man stands 9 M away from a flagpole he observes the angle of elevation of the top of the pole is 28 degree and angle of depression of the bottom of the pole is 13 degrees calculate the height of the pole
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Answer:
Step-by-step explanation:
AB is the pole and CD is the height of man
DE=CB=9m.
In ∆ADE
AE/DE=tan28°
AE/9=0.5317
AE=9×0.5317
AE=4.7853m
In∆DEB
BE/DE=tan13°
BE=9×0.2309
BE=2.0781m
•: Height of pole=AB=AE+BE
=>4.7853+2.0781
=>6.8634m
=>6.86m. Ans.
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