anonymous
  • anonymous
From a point on the ground 144 ft. from the base of a building, the angle of elevation to the top of the building is 23.5°. How tall is the building?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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amistre64
  • amistre64
how level is the ground?
amistre64
  • amistre64
|dw:1328632929302:dw|
anonymous
  • anonymous
it's trig so I am guessing a level plane which would mean it has a 90° angle at C.

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amistre64
  • amistre64
then tangent helps
amistre64
  • amistre64
tan(t) = h/d d tan(t) = h
anonymous
  • anonymous
Make a triangle out of the problem. Your horizontal leg is 144ft. Your vertical leg will be x because that is what you want to find. Your angle will be in between your horizontal leg and hypotenuse. Now it is time to pick a trig function that will answer your question... Tangent is opp/adj so it will incorporate what you need. Your equation is now tan23.5 = x/144. Now solve for x. .4348 = x/144 x is approximately 62.6

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