Detect the error in the following question.The angle of elevation of t

1.	Detect the error in the following question.The angle of elevation of the top of a lighthouse from a point 15 m away from it is 60.On walking 5 m towards it, the angle of elevation was found to be 30. Find the heightof the lighthouse.Suggest appropriate changes.
Answer» Answer: As we will MOVE towards it, the base length will decrease which will increase the angle and elevation; so INITIALLY angle of elevation cant be greater than that FORMED after moving. Changes: the angles 30 and 60 can be interchanged. Hope it helps..

Detect the error in the following question.The angle of elevation of the top of a lighthouse from a point 15 m away from it is 60.On walking 5 m towards it, the angle of elevation was found to be 30. Find the heightof the lighthouse.Suggest appropriate changes.

Answer»

Answer:

As we will MOVE towards it, the base length will decrease which will increase the angle and elevation; so INITIALLY angle of elevation cant be greater than that FORMED after moving.

Changes:

the angles 30 and 60 can be interchanged.

Hope it helps..

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Detect the error in the following question.The angle of elevation of the top of a lighthouse from a point 15 m away from it is 60.On walking 5 m towards it, the angle of elevation was found to be 30. Find the heightof the lighthouse.Suggest appropriate changes.

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