Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

hawkfalcon

  • 2 years ago

Find cos(theta) if tan(theta) = (-2/3) and sin(theta) > 0

  • This Question is Closed
  1. hawkfalcon
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Find \[\cos \theta if \tan \theta = -2/3 and \sin \theta >0\]

  2. qpHalcy0n
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Here, you know that the tangent is opp/adjacent. Since the sine is positive, it must be in either the first or second quadrant right?

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

    Yes.

  4. qpHalcy0n
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So the opposite leg must be positive, therefore since the tangent is negative the adjacent leg must be the negative one. So what quadrant is that?

  5. hawkfalcon
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh so you know o and a, you just need to find the h, and you can solve it :P

  6. qpHalcy0n
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep.

  7. qpHalcy0n
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Lets see what ya got when ya get it.

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

    Thats 2nd quad

  9. hawkfalcon
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Okay:)

  10. qpHalcy0n
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep.

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

    \[\frac{ -3 }{ \sqrt{13}}\]

  12. qpHalcy0n
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Thats it.

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

    :D thank you!

  14. qpHalcy0n
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    No prob.

  15. Yasir_se
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{ x \sqrt{\left| x ^{2}-4 \right|} }{ x ^{2}-4 }-1>0\]

  16. hawkfalcon
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Yasir_se wtf?

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

    • Attachments:

Ask your own question

Ask a Question
Find 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
  • 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.