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Claire4christ

  • 2 years ago

I need help I will download question

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  1. Claire4christ
    • 2 years ago
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    @mayankdevnani

  2. Claire4christ
    • 2 years ago
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  3. Claire4christ
    • 2 years ago
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    @badreferences

  4. badreferences
    • 2 years ago
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    Do you know the trigonometric identities? Sin and cosine?

  5. Claire4christ
    • 2 years ago
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    cosine =adjustment/hypotenuse right

  6. badreferences
    • 2 years ago
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    |dw:1349573615545:dw|

  7. Claire4christ
    • 2 years ago
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    cos 50=x/90

  8. badreferences
    • 2 years ago
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    Not so fast. So we know that \(a=50\) degrees. \(\cos a=\frac BC\). \(C\) we know is \(90\). So yes, to solve for B, you would use \(B=90\cos a\).

  9. Claire4christ
    • 2 years ago
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    cost 50=confused

  10. Claire4christ
    • 2 years ago
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    cos 50=x/90

  11. badreferences
    • 2 years ago
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    Yes. Multiply both sides by \(90\).

  12. Claire4christ
    • 2 years ago
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    you multiply 50x90 right

  13. badreferences
    • 2 years ago
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    No, you multiply 90 by cos 50.

  14. Claire4christ
    • 2 years ago
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    50x90=4,500

  15. Claire4christ
    • 2 years ago
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    i got 4,500

  16. badreferences
    • 2 years ago
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    \[90\cdot\cos50\neq90\cdot50\]

  17. Claire4christ
    • 2 years ago
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    i got 86.87

  18. badreferences
    • 2 years ago
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    That sounds off.

  19. Claire4christ
    • 2 years ago
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    im not sure

  20. badreferences
    • 2 years ago
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    Do you know how to do \(90\times\cos50\)?

  21. Claire4christ
    • 2 years ago
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    cosx50 right

  22. badreferences
    • 2 years ago
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    No, \(\cos\) is an operation.

  23. Claire4christ
    • 2 years ago
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    im getting 4,500 for some reason

  24. badreferences
    • 2 years ago
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    Alright, do you know what an operation is? \(\sin x\) and \(\cos x\) are like machines into which you put a number \(x\) and retrieve a value. So do \(\cos50\) first.

  25. Claire4christ
    • 2 years ago
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    im getting 50

  26. Claire4christ
    • 2 years ago
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    i did cos 50

  27. Claire4christ
    • 2 years ago
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    if i do 50 cos=0.9649

  28. badreferences
    • 2 years ago
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    \(50\cos\neq\cos50\).

  29. badreferences
    • 2 years ago
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    It's not a multiplication.

  30. Claire4christ
    • 2 years ago
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    im getting 50

  31. Claire4christ
    • 2 years ago
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    i click on cos and than i put 50 so i got 50

  32. badreferences
    • 2 years ago
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    I have no idea what you're talking about. You sound confused. Do you know what \(\sin x\) is?

  33. Claire4christ
    • 2 years ago
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    yes on calculator

  34. badreferences
    • 2 years ago
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    No, even more importantly, \(\sin x\) is an operation performed on \(x\). You're used to operations like \(+,-,\times,\div\), but \(\sin x\) is an operation like that. You can't just move the \(\sin\) around.

  35. badreferences
    • 2 years ago
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    @swissgirl @bahrom7893 I can't tell what the confusion here is. Help me!

  36. badreferences
    • 2 years ago
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    @nincompoop You are a better teacher.

  37. swissgirl
    • 2 years ago
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    Ok well on your calculator you should have this button called sin, cos and tan correct?

  38. Claire4christ
    • 2 years ago
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    yes

  39. swissgirl
    • 2 years ago
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    allrrighhttyy so on your calculator type 90*Cos(50) then press enter

  40. swissgirl
    • 2 years ago
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    ohhhh u r on radians. You gotta set your calculator to degrees

  41. Claire4christ
    • 2 years ago
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    oh that's the problem

  42. Claire4christ
    • 2 years ago
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    i dont know why im getting 4,500

  43. Claire4christ
    • 2 years ago
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    what i did is 90xcos50

  44. Claire4christ
    • 2 years ago
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    you don't multiply when its cos(50) right

  45. swissgirl
    • 2 years ago
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    90*50=4500 But we are typing 90*Cos(50) remember to include the Cos

  46. Claire4christ
    • 2 years ago
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    ok i was using my iphone calculator that's why it wasnt working now im using internet cal and i got57.85

  47. swissgirl
    • 2 years ago
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    Correct:)

  48. Claire4christ
    • 2 years ago
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    so what's next

  49. swissgirl
    • 2 years ago
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    idk ask bad

  50. badreferences
    • 2 years ago
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    Ask @nincompoop ... I have a terrible headache.

  51. Claire4christ
    • 2 years ago
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    The cosine of a 50° angle is ____

  52. badreferences
    • 2 years ago
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    @lgbasallote YOU.

  53. badreferences
    • 2 years ago
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    The second most powerful. Most powerful is undoubtedly CleverBot. :P

  54. badreferences
    • 2 years ago
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    Unfortunately, CleverBot is not programmed to give you right answers. Just data mine a lot.

  55. Claire4christ
    • 2 years ago
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    ok who i should ask for help

  56. badreferences
    • 2 years ago
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    Ugh, I don't know how to help because it seems you aren't clear about what you're confused on.

  57. Claire4christ
    • 2 years ago
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    ok

  58. Claire4christ
    • 2 years ago
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    i wasnt using the right calculator

  59. Claire4christ
    • 2 years ago
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    now i got it

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