Class X

The angle of elevation of a ladder leaning against a wall is 60º and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is:
  1. 2.3 m
  2. 4.6 m
  3. 7.8 m
  4. 9.2 m
If the length of shadow of a pole on a level ground is twice the length of that pole ,the angle of elevation of then sun is
  1. 60ᵒ
  2. 30ᵒ
  3. 45ᵒ
  4. None of these
The angle of elevation of the Moon when the length of the of the pole is equal to its height ,is
  1. 60ᵒ
  2. 45ᵒ
  3. 90ᵒ
  4. 30ᵒ
The angle of elevation of a tower from from a distance of 200m from its foot is 30ᵒ Height of the tower
  1. 100√3 m
  2. (200/√3)m
  3. 200√3 m
  4. (100/√3) m
The angle of elevation of the sun, when the length of the shadow of a tree 3 times the height of the tree, is:
  1. 30º
  2. 45º
  3. 60º
  4. . 90º
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