cutiecomittee123
  • cutiecomittee123
A 50 foot tree asts its shadow 75 feet long. How can you find sine for the angle of elevation determined by the sun and the top of the tree?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
what grade u in ??
Here_to_Help15
  • Here_to_Help15
@*ImaBeMe* I find that irrelevant,if your not going to help please hit that log out option and annoy someone else.
jim_thompson5910
  • jim_thompson5910
hint: |dw:1441844647460:dw| solve for \(\Large \theta\)

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cutiecomittee123
  • cutiecomittee123
I agree please leave if you arent willling to help I am trying to keep my schedule organized and I actually am in need of help. this is not a dating website.
Here_to_Help15
  • Here_to_Help15
@ganeshie8 @jim_thompson5910
jim_thompson5910
  • jim_thompson5910
another hint: |dw:1441844715344:dw|
anonymous
  • anonymous
ok i just asked dang
cutiecomittee123
  • cutiecomittee123
this is precalculus incase youre wondering.
jim_thompson5910
  • jim_thompson5910
if you aren't familiar with the trig ratios, this chart may help http://passyworldofmathematics.com/Images/pwmImagesSix/TrigRatiosSix550x389JPG.jpg
cutiecomittee123
  • cutiecomittee123
alright so sinfeta=50/x
cutiecomittee123
  • cutiecomittee123
then take the inverse right?
cutiecomittee123
  • cutiecomittee123
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
theta = \(\Large \theta\) it's a greek letter
cutiecomittee123
  • cutiecomittee123
Oh gotcha
jim_thompson5910
  • jim_thompson5910
which two sides are known to us? (pick between opposite, adjacent, hypotenuse)
cutiecomittee123
  • cutiecomittee123
we know opposite and adjacent. which are opposite=50 and adjacent=75
jim_thompson5910
  • jim_thompson5910
yep, which trig function uses opposite and adjacent?
cutiecomittee123
  • cutiecomittee123
but it is asking to find sine
jim_thompson5910
  • jim_thompson5910
oh I see, I was thinking they just wanted theta, nvm
jim_thompson5910
  • jim_thompson5910
ok so you'll need the hypotenuse first because sin(theta) = opp/hyp
Here_to_Help15
  • Here_to_Help15
Wait up i remember this in Geometry, are you sure it isnt Geometry
jim_thompson5910
  • jim_thompson5910
so use the pythagorean theorem to find x |dw:1441845085421:dw| a^2 + b^2 = c^2 50^2 + 75^2 = x^2 x = ???
cutiecomittee123
  • cutiecomittee123
you do learn this in geometry, if you want to try and give it a shot, i wont stop you lol
cutiecomittee123
  • cutiecomittee123
c=90.14
cutiecomittee123
  • cutiecomittee123
sintheta=50/90.14
jim_thompson5910
  • jim_thompson5910
you have one more step to go
cutiecomittee123
  • cutiecomittee123
uhh that is where i need help
cutiecomittee123
  • cutiecomittee123
dont you just take the inverse
jim_thompson5910
  • jim_thompson5910
use a calculator to compute 50/90.14
cutiecomittee123
  • cutiecomittee123
okay i got .5546
jim_thompson5910
  • jim_thompson5910
I'm getting 50/90.14 = 0.55469270024407 which rounds to 0.5547
cutiecomittee123
  • cutiecomittee123
yes!
cutiecomittee123
  • cutiecomittee123
and that is what the angle sin is equal to right?
jim_thompson5910
  • jim_thompson5910
that decimal value is equal to \(\Large \sin(\theta)\), yes
cutiecomittee123
  • cutiecomittee123
okay cool, and that is it right?

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