A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Studying for a test and forgot how to do this In the triangle below, what ratio is sec θ? HYP = 3.9 ADJ =3.6 OPP = 1.5 My choices are 1. 12/13 2. 5/13 3. 13/12 4. 12/5

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Nnesha @Hero @dan815

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    picture?

  3. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    draw a right triangle

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Well secant is 1/cosine. And I don't know if you ever learned this but my teachers always referred me back to SOHCAHTOA, Sine= opposite/hypotenuse Cosine = adjacent/hypotenuse Tangent = opposite/adjacent So from that you see that cosine is A/H and so secant would be H/A because it's the reciprocal So you have to see which answer is the same ratio as 3.9/3.6

  5. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1441061520659:dw|

  6. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    what is the definition of sec ? reciprocal of sec = what ?

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Secant is the reciprocal of cosine so whatever cosine would be, say 3/4, secant would just be the reciprocal so 4/3

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    cosine is the reciprocal right? @Nnesha

  9. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes not cosine if sin = 1/csc then csc =1/sin

  10. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    same with the sec

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Okay I'm still a little confused.

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    What do I do to find the answer?

  13. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    first of all you need to know \[\rm sin \rm \theta = \frac{ opposite }{ hypotenuse }~~~~ \cos \theta = \frac{ adjacent }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent }\]

  14. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    sec is reciprocal of 1/cos now look at the diagram cos theta =?

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The secant would be the Hypotenuse/Adjacent So you would divide 3.9/3.6 which equals about 1.083 Then divide out the other answers to see which combination matches 1.083

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @hiltbrandj09 Okay I get it. So it would be 13/12 right?

  17. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Nnesha Do you think that is right?

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you both so much!

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @marilynmonroe exactly!! & no problem (:

  20. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.