Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

janessia Group Title

Isaac is looking through binoculars on a whale watching trip when he notices a sea otter in the distance. If he is 20 feet above sea level in the boat, and the angle of depression is 30 degrees, how far away from the boat is the otter (to the nearest foot)?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    hello are you there? do u think you can draw this first before you can solve?

    • 2 years ago
  2. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @ janessia

    • 2 years ago
  3. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    hmm idk

    • 2 years ago
  4. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    how would i draw it?

    • 2 years ago
  5. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    do you know the angle of depression?

    • 2 years ago
  6. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1351530728427:dw|

    • 2 years ago
  7. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    the height y=20 , the x= distance angle theta = angle of depression

    • 2 years ago
  8. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so how do i solve this?

    • 2 years ago
  9. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1351530990457:dw|

    • 2 years ago
  10. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    you can try tangent

    • 2 years ago
  11. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    opposite hypotenuse?

    • 2 years ago
  12. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    opposite adjacent

    • 2 years ago
  13. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ?

    • 2 years ago
  14. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    sorry my pc got frozen,,, yes try that tangent

    • 2 years ago
  15. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    let me know what you getting

    • 2 years ago
  16. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\tan \theta =\frac{ 20 }{ x } ,......\] then what is x=?

    • 2 years ago
  17. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    memorized sin A= opposite/ hypotenuse cos A= adjacent/hypotenuse tan A= opposite/adjacent

    • 2 years ago
  18. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ohk but hmmmm??? im so confused

    • 2 years ago
  19. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    just forget it its fine

    • 2 years ago
  20. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\tan \theta =\frac{ 20 }{ x }\] so here we want x, therefore multiply both sides by x, to get \[xtan \theta =\frac{ 20 }{ x }.x\] \[x \tan \theta =20\] divide both sides by tan o gives \[\frac{ x \tan \theta }{ \tan \theta }=\frac{ 20 }{ \tan \theta } \] w/c gives \[x=\frac{ 20 }{ \tan \theta }....\] x=?

    • 2 years ago
  21. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    did you get it? angle of depression \[\theta =30\]

    • 2 years ago
  22. mark_o. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so x= 20/ tan 30 what did you get?

    • 2 years ago
    • Attachments:

See more questions >>>

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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.