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The angle of depression of a point on the ground from the top of a...

Mathematics
WAEC 1989
The angle of depression of a point on the ground from the top of a building is 20.3o. If the foot of the building is 40m, calculate the height of the building, correct to one decimal place
  • A. 37.5m
  • B. 28.1m
  • C. 27.8m
  • D. 14.8m
  • E. 13.9m
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Correct Answer: Option D
Explanation
Tan 69.7 = 40/h
h =
40/tan 69.7
=
40/2.703
h = 14.79 = 14.8
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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