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SantanaG

  • 2 years ago

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

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

  3. SantanaG
    • 2 years ago
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    I have no idea :(

  4. baldymcgee6
    • 2 years ago
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    Try using some numbers, it might help.

  5. SantanaG
    • 2 years ago
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    like what #s though?

  6. UnkleRhaukus
    • 2 years ago
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    can you find the sine of 0 ?

  7. baldymcgee6
    • 2 years ago
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    Like that :)

  8. SantanaG
    • 2 years ago
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    is sine of 0, 0?

  9. UnkleRhaukus
    • 2 years ago
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    yes

  10. UnkleRhaukus
    • 2 years ago
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    what about the cosine of zero ?

  11. SantanaG
    • 2 years ago
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    1?

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

  13. SantanaG
    • 2 years ago
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    the cosine ones b/c it equals 1

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

  15. SantanaG
    • 2 years ago
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    yepp :)

  16. Luigi0210
    • 2 years ago
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    -sinx

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

  18. SantanaG
    • 2 years ago
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    yeah hold on plz

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

  20. UnkleRhaukus
    • 2 years ago
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    nope,

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

  22. SantanaG
    • 2 years ago
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    1

  23. SantanaG
    • 2 years ago
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    sorry

  24. UnkleRhaukus
    • 2 years ago
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    thats better

  25. UnkleRhaukus
    • 2 years ago
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    so we have these points |dw:1359689543363:dw|

  26. UnkleRhaukus
    • 2 years ago
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    |dw:1359689628038:dw|

  27. SantanaG
    • 2 years ago
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    so it is y=sin(x)

  28. UnkleRhaukus
    • 2 years ago
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    |dw:1359689692221:dw|

  29. UnkleRhaukus
    • 2 years ago
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    correct

  30. SantanaG
    • 2 years ago
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    Sweet! thanks! :)

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