the angle of elevation of the top of a vertical pole is 60° from a point on the ground the distance of the top of pole and point on the ground is 10√3m find the height of the pole
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Answer:
Correct option is D)
Suppose AB represents the pole,
O is angle of elevation at the top of the pole from a point 60 m away from the pole.
Then, OA = 60 m, ∠O = 30
o
∴ tan 30
o
=
OA
AB
⇒
3
1
=
60
AB
⇒AB=
3
60
=20
3
.
∴ AB=20×1.73=34.6 m [
3
=1.73]
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