anonymous
  • anonymous
An observer (O) spots a bird flying at a 55° angle from a line drawn horizontal to its nest. If the distance from the observer (O) to the bird (B) is 15,000 ft., how far is the bird (B) from its nest (N)? Round to the nearest whole number. These are the choices: A) 8,604 Feet B) 12,287 Feet C) 18,366 Feet D) 21,422 Feet
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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anonymous
  • anonymous
I'd like to learn this please, not just get the answer! :)
anonymous
  • anonymous
I know the functions by the way.

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More answers

welshfella
  • welshfella
angle = 55 degrees side adjacent to the angle (A) = x hypotenuse (H) = 15,000 so which trig ratio do we require?
anonymous
  • anonymous
The cosine function?
welshfella
  • welshfella
by trig ratio i mean trig function
welshfella
  • welshfella
yes
anonymous
  • anonymous
Okay, so the first step would be: cos55 = x/15,000 ??
welshfella
  • welshfella
that correct
anonymous
  • anonymous
Okay, then you'd do cos 55 into the calculator which gives you: 0.57357. Then I'd multiple 15,000 into 0.57357?
anonymous
  • anonymous
yep!
anonymous
  • anonymous
Which will be: 8603.55 which rounds to 8604 which is A. :)
welshfella
  • welshfella
yes
anonymous
  • anonymous
Okay, thank you haha! :)
anonymous
  • anonymous
Looks like you hardly need any help champ!
welshfella
  • welshfella
well done
anonymous
  • anonymous
Wanted to make sure I was correct lol.
welshfella
  • welshfella
I don't want to appear pedantic but its more correct to say 'multiply by' than 'multiply into' - this threw me at first because you can say 'divide into'.

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