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SantanaG

Which function's graph is shown below? A. y = -sin x B. y = cos x C. y = sin x D. y = -cos x

  • one year ago
  • one year ago

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  1. SantanaG
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    • one year ago
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  2. UnkleRhaukus
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    which do you think? @SantanaG?

    • one year ago
  3. SantanaG
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    I have no idea :(

    • one year ago
  4. baldymcgee6
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    Try using some numbers, it might help.

    • one year ago
  5. SantanaG
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    like what #s though?

    • one year ago
  6. UnkleRhaukus
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    can you find the sine of 0 ?

    • one year ago
  7. baldymcgee6
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    Like that :)

    • one year ago
  8. SantanaG
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    is sine of 0, 0?

    • one year ago
  9. UnkleRhaukus
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    yes

    • one year ago
  10. UnkleRhaukus
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    what about the cosine of zero ?

    • one year ago
  11. SantanaG
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    1?

    • one year ago
  12. UnkleRhaukus
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    goood, looking at the graph , we see the line passes through the origin , which two options does this eliminate?

    • one year ago
  13. SantanaG
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    the cosine ones b/c it equals 1

    • one year ago
  14. UnkleRhaukus
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    ok good, so we have to choose between y= sin x, y= -sin x

    • one year ago
  15. SantanaG
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    yepp :)

    • one year ago
  16. Luigi0210
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    -sinx

    • one year ago
  17. UnkleRhaukus
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    can you find the sine of π/2

    • one year ago
  18. SantanaG
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    yeah hold on plz

    • one year ago
  19. SantanaG
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    sine of pi/2=0

    • one year ago
  20. UnkleRhaukus
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    nope,

    • one year ago
  21. UnkleRhaukus
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    \[\sin(π/2)=\]

    • one year ago
  22. SantanaG
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    1

    • one year ago
  23. SantanaG
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    sorry

    • one year ago
  24. UnkleRhaukus
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    thats better

    • one year ago
  25. UnkleRhaukus
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    so we have these points |dw:1359689543363:dw|

    • one year ago
  26. UnkleRhaukus
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    |dw:1359689628038:dw|

    • one year ago
  27. SantanaG
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    so it is y=sin(x)

    • one year ago
  28. UnkleRhaukus
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    |dw:1359689692221:dw|

    • one year ago
  29. UnkleRhaukus
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    correct

    • one year ago
  30. SantanaG
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    Sweet! thanks! :)

    • one year ago
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