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?

Question

anonymous · Answer

what grade u in ??

here_to_help15 · Answer

@*ImaBeMe* I find that irrelevant,if your not going to help please hit that log out option and annoy someone else.

jim_thompson5910 · Answer

hint:
|dw:1441844647460:dw|

solve for $\Large \theta$

cutiecomittee123 · Answer

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 · Answer

@ganeshie8 @jim_thompson5910

jim_thompson5910 · Answer

another hint:
|dw:1441844715344:dw|

anonymous · Answer

ok  i just asked dang

cutiecomittee123 · Answer

this is precalculus incase youre wondering.

jim_thompson5910 · Answer

if you aren't familiar with the trig ratios, this chart may help http://passyworldofmathematics.com/Images/pwmImagesSix/TrigRatiosSix550x389JPG.jpg

cutiecomittee123 · Answer

alright so sinfeta=50/x

cutiecomittee123 · Answer

then take the inverse right?

cutiecomittee123 · Answer

@jim_thompson5910

jim_thompson5910 · Answer

theta = $\Large \theta$

it's a greek letter

cutiecomittee123 · Answer

Oh gotcha

jim_thompson5910 · Answer

which two sides are known to us? (pick between opposite, adjacent, hypotenuse)

cutiecomittee123 · Answer

we know opposite and adjacent. which are opposite=50 and adjacent=75

jim_thompson5910 · Answer

yep, which trig function uses opposite and adjacent?

cutiecomittee123 · Answer

but it is asking to find sine

jim_thompson5910 · Answer

oh I see, I was thinking they just wanted theta, nvm

jim_thompson5910 · Answer

ok so you'll need the hypotenuse first because sin(theta) = opp/hyp

here_to_help15 · Answer

Wait up i remember this in Geometry, are you sure it isnt Geometry

jim_thompson5910 · Answer

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 · Answer

you do learn this in geometry, if you want to try and give it a shot, i wont stop you lol

cutiecomittee123 · Answer

c=90.14

cutiecomittee123 · Answer

sintheta=50/90.14

jim_thompson5910 · Answer

you have one more step to go

cutiecomittee123 · Answer

uhh that is where i need help

cutiecomittee123 · Answer

dont you just take the inverse

jim_thompson5910 · Answer

use a calculator to compute 50/90.14

cutiecomittee123 · Answer

okay i got .5546

jim_thompson5910 · Answer

I'm getting 50/90.14 = 0.55469270024407 which rounds to 0.5547

cutiecomittee123 · Answer

yes!

cutiecomittee123 · Answer

and that is what the angle sin is equal to right?

jim_thompson5910 · Answer

that decimal value is equal to $\Large \sin(\theta)$, yes

cutiecomittee123 · Answer

okay cool, and that is it right?