as0w2ilianasukol as0w2ilianasukol
  • 19-03-2017
  • Mathematics
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With the sun at an angle of 30 to the ground, a tree casts an 80 ft shadow. how tall is the tree

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Аноним Аноним
  • 19-03-2017
let tree's height = h

h/80 = tan 30
⇒ h = 80 tan 30
⇒ h = 80 * 1/√3
⇒ h = 46.19 ft
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