Question
A person is standing 30 meters away from the base of a
building. If the angle of elevation from the person's eye level to the top of the building is 60 degrees, find the height of the building (assuming the person's eye level is 1.5 meters above the ground).Solution
Let the height of the building be h. The height from the eye level to the top is given by: tan 60 degrees = (h - 1.5)/30, where tan 60 degrees = √3 ≈ 1.732. Thus, h - 1.5 = 30 * 1.732 h - 1.5 = 51.96 h = 51.96 + 1.5 = 53.46 m. Correct Answer: c) 53.46 m
Small etiolated area develops near the distal end of the fruit which gradually spreads, turns nearly black and covers the tip of the fruit completely. T...
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The economic problem concerned with choosing between different combinations of outputs that can be produced using the same resources is called a:
Which wheat rust is known as a killer disease?
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The practice of cultivation in the air is termed as .......................... ?
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Match List-I with List-II and select the correct answer using the codes given below the lists.
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