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Rahaf
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A tree standing vertically on level ground casts a 140 foot long shadow. The angle of elevation from the end of the shadow to the top of the tree is 24.7°. Find the height of the tree to the nearest foot.
 one year ago
 one year ago
Rahaf Group Title
A tree standing vertically on level ground casts a 140 foot long shadow. The angle of elevation from the end of the shadow to the top of the tree is 24.7°. Find the height of the tree to the nearest foot.
 one year ago
 one year ago

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cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
dw:1366148873008:dw
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
you use trigonometry to solve this x is height of the tree which trigonometric ratio do we use here?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
the trig ratios are sine, cosine and tangent  do u know what each of those are?
 one year ago

Rahaf Group TitleBest ResponseYou've already chosen the best response.0
I'm really not good at this i tried many times
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
they are the ratios of the different sides in a right angled triangle dw:1366149664499:dw
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
x is the angle O = opposite side H = hypotenuse (longest side) A = adjacent side sin x = O / H cos x = A / H tan x = O / A
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
you remember these by memorizing the following bit of nonsense SOHCAHTOA
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
in a right angled traingle you can find lengths of sides and angles as long you know the value of another 2 sides/angles
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
in your problem you know one angles 24.7 degrees and you know the adjacent side 140 and you need to find the opposite side x = 24.7, A = 140 and O = ? so you have O and A (TOA) so u need to use the tangent (T) tan 27.4 = x / 140 so x = 140* tan 24.7 grab your calculator and you can work this out
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
hope this helps sorry but I gotta go right now
 one year ago

Rahaf Group TitleBest ResponseYou've already chosen the best response.0
Got it, thank you so much :)
 one year ago
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