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rubyhunter Group Title

sin(x+pi) in terms of x

  • 2 years ago
  • 2 years ago

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  1. zordoloom Group Title
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    Does this equal 0?

    • 2 years ago
  2. rubyhunter Group Title
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    idk thats y i need help, this is how they gave it to me , it didnt say 0

    • 2 years ago
  3. ajprincess Group Title
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    sin(x+pi) is in the third quadrant. in the third quadrant only tan value is positive. pi=180 here sin(x+pi)=-sinx

    • 2 years ago
  4. jishan Group Title
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    sin(180+x)=-sinx

    • 2 years ago
  5. ajprincess Group Title
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    Does that make sense @rubyhunter?

    • 2 years ago
  6. jishan Group Title
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    right ajprincess

    • 2 years ago
  7. rubyhunter Group Title
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    yea but is -sinx what they mean by in terms of x?

    • 2 years ago
  8. ajprincess Group Title
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    yaa

    • 2 years ago
  9. rubyhunter Group Title
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    okay thanks

    • 2 years ago
  10. ajprincess Group Title
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    welcome:)

    • 2 years ago
  11. jayz657 Group Title
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    you can try this using the identity sin(x + pi) = cos(x)sin(pi) + sin(x)cos(pi) sin(pi) = 0 cos(pi) = -1 so you get cos(x)(0) + sin(x)(-1) = -sinx

    • 2 years ago
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