anonymous
  • anonymous
help with finding side of triangle
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Bob is driving along a straight and level road straight toward a mountain. At some point on his trip he measures the angle of elevation to the top of the mountain and finds it to be 25°11'. Find the height of the mountain to the nearest foot if Bob is 19,427.5 feet from the center of the mountain at the base.
zpupster
  • zpupster
|dw:1443102710948:dw| opp/adj = tan
anonymous
  • anonymous
what does the 11 in the 25°11' mean then

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More answers

dakid88
  • dakid88
tan(34 40/60) = h/(x-5280) --- Therefore 0.4748x = 0.69157(x-5280) 0.4748x = 0.69157x-0.09157*5280) --- -0.2168x = -0.09157*5280 --- x = 2230 ft
anonymous
  • anonymous
im confused where did you get the numbers for that
zpupster
  • zpupster
so ht/19427.5 =tan25
dakid88
  • dakid88
yes
anonymous
  • anonymous
what about the 11 in the equation?
anonymous
  • anonymous
after the 25 degrees
zpupster
  • zpupster
it is minutes
dakid88
  • dakid88
tht is divided by the 25
anonymous
  • anonymous
how come were not using it then
anonymous
  • anonymous
and also where did you get the number 5280 @dakid88
zpupster
  • zpupster
you can use it 11/60 and get a decimal
anonymous
  • anonymous
oh i see
anonymous
  • anonymous
so where do i go from here then
dakid88
  • dakid88
get the answer
anonymous
  • anonymous
thats what ive been needing help with
dakid88
  • dakid88
brb
anonymous
  • anonymous
thats not any of the answer choices
Mertsj
  • Mertsj
|dw:1443103740128:dw|
anonymous
  • anonymous
yes then what @Mertsj
Mertsj
  • Mertsj
\[\tan 2511/60=\frac{x}{19427.5}\]
anonymous
  • anonymous
i have it set up like that i just dont remeber how to solve it thats what ive been trying to ask
Mertsj
  • Mertsj
\[.89567=\frac{x}{19427.5}\]
Mertsj
  • Mertsj
\[.89567(19427.5)=x\]
anonymous
  • anonymous
i got 17,400
Mertsj
  • Mertsj
x= 17400.72 ft
anonymous
  • anonymous
but that cant be the answer because its not any of the answer choices
Mertsj
  • Mertsj
What are your choices?
anonymous
  • anonymous
9135, 9235, 91351, 913515
anonymous
  • anonymous
and 17400 isnt close to any
Mertsj
  • Mertsj
whoops. I must have misused the tangent function on my calculator. I now get .47020 for the tangent of 25 11/50 degrees.
anonymous
  • anonymous
yeah i just figured it out thank you
Mertsj
  • Mertsj
\[.47021=\frac{x}{19427.5}\]
anonymous
  • anonymous
i got it its 9141
Mertsj
  • Mertsj
\[x= .47021(19427.5)=9134.9859\]
Mertsj
  • Mertsj
yw

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