Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

SugarRainbow

  • 2 years ago

if cos 0<0 and tan 0 >0 then in which quadrant does 0 lie? (0=beta IDK how to do the symbol on here)

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

    |dw:1349413466539:dw| the ratios mentioned are positive in that quadrant.

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

    oh so its in quadrant 1?

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

    in quadrant 1 ALL are positive, your question requires, tan to be negaive, so its not in 1st quadrant

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

    *sorry, cos to be negative

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

    from the diagram, in which quadrant you find tan to be positive ?

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

    oh so 4?

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

    |dw:1349413799469:dw|

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

    uh tan is positive in idk i looking at my unit circle and where tan is on your diagram its negative unless its in q1

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

    cos (beta) < 0 means beta is in QII, QIII tan (beta) > 0 means beta is in QIII, QI where does beta have to be to meet these two requirements?

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

    |dw:1349413873008:dw|

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

    but tan is x right? wait can i even reate this to this|dw:1349413939970:dw|

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

    that circle has co=ordinates of cos and sine so now you know the signs of cos and sine can u find out sign of tan using that, in each quadrant ?

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

    oh wait tan = sin/cos/45 in which yes that part is positive so its in q3!!!!!

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

    hey just for note taking is the cot negative then?

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

    when tan is positive cot = 1/ tan is also positive

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

    so is tan ever negative then cat is too

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

    tan is negative when only one of sin or cos is negative, that is in 2nd and 4th quadrant

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

    and in the all part they're alll only positive right

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

    yes. in 1st quadrant all ratios are positive

  20. akash_809
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    just a way, i used to remember above diagaram, Add , Sugar, To ,Coffe...

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

    okay then in q2 and q4 then cot is - yes?

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

    yes.

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

    okay then sin is + in q2 and - in q 3 and 4?

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

    yes, you are reading it correctly :)

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

    okay then what about sec

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

    to akash_809 I see wat you did there

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

    since sec = 1/cos sign of sec is same as sign of cos everywhere

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

    oh i meant csc

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

    csc x =1/ sin x sign of csc is same as sign of sin everywhere

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

    oh wait cos is + in q4 and - in q 2 and 3 correct?

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

    yes.

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

    okay now can we do the next question

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

    u can use Add sugar to coffee or All silver tea cups to remember that diagram. or you could make one on your own.

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

    like add sugarrainbow to castle

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

    lol

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

    yeah i gots it now the all suckers take crap is the ones that are the only ones positive in their quadrant (except q1 where they're all positive)

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

    okay next question how would you find exact value of 5pi/3?

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

    5pi/3 ? in degrees ? or some ratio of 5pi/3 ? like sin 5pi/3

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

    umm it just says "the exact value of csc (5pi/3) (oops i guess i forgot the ratio part sorry)

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

    u need to use some of trignometry identities. first can u find sin (5pi/3) because csc =1/ sin

  41. cansdy21356
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i need help . The image below shows two parallel lines cut by a transversal. What is the value of a? two vertical lines cut with a transversal, the angle below and to the right of where the transversal intersects the left line is labeled 2 a plus 3 degrees, and the angle above and to the right of where the transversal intersects the right line is labeled a degrees

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

    yes its -square root 3/2 and you would multiply by radical 3 to get -2sqrt3/3!!!!

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

    umm, - root 3 / 2 ... why do u need to multiply by radical ? sin 5pi/6 = - root 3 /2 csc 5 pi/6 = -2/ root 3 here, you will multiply by radical 3 to get csc 5pi/6 = -2sqrt3/3

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

    yeah that's what i got?

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

    then you are correct :)

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

    okay last question how would you horizontally shift y=4 sin (beta-80)

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

    oh yeah and this question says determine the exact values of the 6 trigonometric functios of an angle in standard position whose terminal side passes through the point (-1,3) and for tan i got -1/3 and cot i got 3/3 and she said its wrong so was i supposed to do...

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

    -1/sqrt10 then multiply by sqrt 10 to get -1sqrt10/10?

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

    sorry, can u post this as a new question, i need to go :(

  50. 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.