1 thought on “27. From a building 60 m high, the angle of depression of the top and bottom of a <br /><br />lamp post are 30° and 60° respective”
Answer:
From the top of building AB, the angle of depression of the top and bottom of the tower CD is 30∘ and 60∘. From the figure we can understand that the ground level BD is parallel to the lamp CE. … So we can say that, ∠FAC=∠ACE=30∘ i.e. they are alternate angles. Similarly, ∠FAD=∠ADB=60∘, alternate angles.
Answer:
From the top of building AB, the angle of depression of the top and bottom of the tower CD is 30∘ and 60∘. From the figure we can understand that the ground level BD is parallel to the lamp CE. … So we can say that, ∠FAC=∠ACE=30∘ i.e. they are alternate angles. Similarly, ∠FAD=∠ADB=60∘, alternate angles.