A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Simplify the expression; tan(-x) cos(-x)=?

  • This Question is Closed
  1. rvc
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    convert tan into sin and cos

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

    idk how

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

    \(tanx=\Large\frac{sinx}{cosx}\)

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

    what is cos(-x)=?

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

    i still don't know what to do.

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

    I don't understand how to do any of this.

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

    do you know what is cos(-x) =?

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

    look at thin link Trigonometry Basic: http://openstudy.com/study#/updates/553f1223e4b061e2642b5eb6

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

    cos(-x) = cos(x) sin(-x) = - sin(x)

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

    k

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

    can someone please help me? I don't understand any of this.

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

    convert tanx into sin and cos

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

    \[\Large \tan(-x)\cos(-x)-->\frac{ \sin(-x) }{\cos(-x) }\cos(-x)\]

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

    @perl @Data_LG2 please help

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

    @andreaevelynn can you tell us which part of rvc's explanation you did not understand so that we can explain it to you better?

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

    @andreaevelynn u here?

  17. 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.