Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

nikakuz

  • 2 years ago

Name five x values for which the sine function equals to 0. Please help!!

  • This Question is Closed
  1. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 4

    Are you familiar with the unit circle?

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

    no

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

    Then find the inverse sine of 0 and and 360 to that answer repeatedly until you have 5 values.

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

    how?

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

    With your calculator

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

    I don't know how though

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

    inverse sin 0 enter

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

    What in the world are you doing that you don't know anything about the unit circle and don't know how to use your calculator?

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

    i put sin 0 enter and the answer was 0 how do i get 5 values?

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

    trying to learn from an oonline classs

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

    |dw:1375670932781:dw|

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

    Have you ever seen that before?

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

    yeah

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

    That is the unit circle. It is called the unit circle because the radius is 1 unit. The sin is like y.

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

    Do you see that the y value is 0 at 0 degrees and 180 degrees?

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

    yes

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

    Your problem says to give 5 values for which the sin is 0. There are two of them right there: 0 degrees and 180 degrees. If we would go around the circle another time, we would come to 360 degrees and 180+360 which is 540 degrees. Are you with me?

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

    sorta.. so it would be 0,180,540?

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

    0,180,360,540... Just keep adding 180 degrees because every 180 degrees, the y value (which is the sin) is 0.

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

    Or, instead of rotating counterclockwise, we could go clockwise and then the angles would be -180, -360, -540, ...

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

    ohh ok thank you! i have the same question exept its cosine value

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

    Same thing except the cosine is like x.

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

    So where is the cosine 0 on the unit circle?

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

    um im not sure

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

    Look at the picture I drew. For what angles is the x value 0?

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

    |dw:1375671563924:dw|

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

    How many degrees is that?

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

    90?

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

    Yes.

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

    And what is the next angle where the x value is 0?

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

    so it would be 90 180...?

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

    |dw:1375671659091:dw|

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

    270?

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

    yes. so the x value is 0 at 90, 270, 450, 630...

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

    thank you soo much i just have one more

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

    Or at -90, -270, -450...

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

    same but tangent function

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

    Do you know the definition of tangent?

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

    umm no

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

    tangent is equal to sin over cos Have you ever heard that?

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

    i think ive heard it

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

    \[\tan x=\frac{ \sin x}{\cos x}\]

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

    The only way a fraction can be 0 is for the numerator to be 0. So the tangent is 0 whenever the sin is 0

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

    ok so then wht

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

    Are you trying to answer this question: Give 5 angles who tangent is 0?

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

    the question is name five x values for which the tangent function equals to 0

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

    Could you answer this question: Name five x values for which the sine function equals to 0?

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

    yeah we already did that one

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

    So did you read this post which I made a few moments ago: "The only way a fraction can be 0 is for the numerator to be 0. So the tangent is 0 whenever the sin is 0"

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

    yeah i read it but i don't understand

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

    The sin of 180 degrees is 0. Therefore the tangent of 180 degrees is also 0 The sin of 0 degrees is 0. Therefore the tangent of 0 degrees is also 0 The sin of 360 degrees is 0. Therefore the tangent of 360 degrees is also 0 The sin of 540 degrees is 0. Therefore the tangent of 540 degrees is also 0.

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

    so my answer would be exactly the same as the sine one?

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

    Let's make sure you understand this.

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

    What is the sin of 180 degrees?

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

    0

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

    What is the cosine of 180 degrees?

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

    \[\tan 180^{o}=\frac{\sin 180^{o}}{\cos 180^{o}}=\frac{0}{-1}=0\]

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

    I guess you've gone. Good luck.

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

    yeah i get it thank you soo much!!!!

  60. 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