A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
A bird (B) is spotted flying 900 feet from an observer. The observer (O) also spots the top of a tower (T) at a height of 200 feet. What is the angle of depression from the bird (B) to the observer (O)?
These are the choices:
A) 12.52°
B) 12.84°
C) 77.16°
D) 83.69°
anonymous
 one year ago
A bird (B) is spotted flying 900 feet from an observer. The observer (O) also spots the top of a tower (T) at a height of 200 feet. What is the angle of depression from the bird (B) to the observer (O)? These are the choices: A) 12.52° B) 12.84° C) 77.16° D) 83.69°

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't want to just know the answer, I'd like to learn it. I know the sin, cos, tan functions btw. I just am a bit confused on this question.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You are given the value of 2 sides, and you want to find an angle, what trigonometric function of that angle relates the 2 sides?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That would be the sin function right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\sin(x)=\frac{OT}{OB}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0After simplifying the ratio, you can use a calculator

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay wouldn't it be sin (x) = 200/900?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0yes I am a little too! Your diagram does not appear to be right From my understanding the tower is 200 ft high  the diagram shows that the distance to the tower is 200 feet. I guess the 200 ft must be the distance from the observer to the tower

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, then I'd divide 200 into 900 right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait.. What're you saying @welshfella

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0no you divide 900 into 200

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0was the diagram given in the question?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\sin(x)=\frac{200}{900}=\frac{2}{9}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes the wording is a little off in the question, it seems like the distance to the tower rather than it's height, but there's no need to think about it too much

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What do you mean diagram? Sorry, I'm a bit confused on what I should do now haha.. So should I just switch it around and divide 900 into 200? @welshfella @Nishant_Garg

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0 but you should query it @ScienceAndMath . Math can be difficult enough without having confusing questions...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441025224072:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, so 200 is the distance then?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0 yes that looks like the problem. I was asking whether the picture you gave was part of the original question.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yep, it looks like that is the case

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, this is the exact picture for the question:

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0Oh OK then you are on right track The picture is correct but the question has an error.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay well if T is the distance should I still use the sin function for 200/900?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0yes Nishant's formula is correct

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0use a calculator to find arcsin of 200/900, make sure to convert it to degrees if it's in radians

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Let me explain what I got and maybe you guys could correct it: sin(x) = 200/900 (divide 200 into 900) = 0.2222 sin^1 0.2222 = 12.838 x 180 divide into pi (3.14) = 735.95 But then I remember you saying that I should divide 900 into 200..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.012.838 approximately 12.84, that's perfect you got your answer there

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it was already in degrees you didn't need to convert it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh right, I forgot haha, the x 180 divided into pi was just another way to convert it instead of the sin^1.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0one way to remember if you're on right track is that sine and cosine will always give proper fractions so saying something like \[\sin(x)=\frac{900}{200}\] is totally absurd!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh okay! So everything works out then?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0however sine can also give 1 if the angle is 90, for angles smaller than 90 and greater than 0 it will always give a proper fraction

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yep you've done the question

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you for all your help!
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.