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Shawna17

  • 2 years ago

Solve the equation on the interval [0, 2π). cos x + 2 cos x sin x = 0

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  1. Swaazy
    • 2 years ago
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  2. Shawna17
    • 2 years ago
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    ok then what?

  3. Swaazy
    • 2 years ago
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    thats the answer

  4. ZeHanz
    • 2 years ago
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    You should explain a little...

  5. ZeHanz
    • 2 years ago
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    (@Swaazy )

  6. Swaazy
    • 2 years ago
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    naaaaah

  7. churrity
    • 2 years ago
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    I like toast

  8. ZeHanz
    • 2 years ago
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    Try to factor: you can factor out cos x

  9. ZeHanz
    • 2 years ago
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    cos x(1+2sin x)=0

  10. Swaazy
    • 2 years ago
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    quit trippin . . .

  11. churrity
    • 2 years ago
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    ZeHanz = Afganistan PIMP

  12. ZeHanz
    • 2 years ago
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    So cos x = 0 or 1+2sin x = 0

  13. Shawna17
    • 2 years ago
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    ok

  14. Swaazy
    • 2 years ago
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    don't lie . . .

  15. churrity
    • 2 years ago
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    dry your eye

  16. Shawna17
    • 2 years ago
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    @Swaazy look i asked for help not someone to annoy me

  17. Swaazy
    • 2 years ago
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    and here comes your mother with those two little guys. Punched me in the belly and stepped on my feet, wauh slammed the bit* on the hard concrete

  18. ZeHanz
    • 2 years ago
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    cos x = 0 or sin x = -½ Now try to remember what values of x will give cos x = 0 or sin x = -½...

  19. churrity
    • 2 years ago
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    The pimp was strong, the bit*h was gone, something was wrong I said what is going on?

  20. Shawna17
    • 2 years ago
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    @Swaazy you are now block thanks have a nice life

  21. Swaazy
    • 2 years ago
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    yo

  22. ZeHanz
    • 2 years ago
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    @Shawna17: can you look up these values in a table?

  23. Shawna17
    • 2 years ago
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    how would I do that do you have a link?

  24. ZeHanz
    • 2 years ago
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    You could use this one, see image

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  25. Shawna17
    • 2 years ago
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    my choices are A. 0, pi/2, 7pi/6, 3pi/2 B. pi/2, 7pi/6, 3pi/2,11pi/6 C 7pi/6, 11pi/6, 2pi D. 7pi/6, 11pi/6

  26. ZeHanz
    • 2 years ago
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    cos x = 0 gives pi/2 and 3pi/2 sin x = -½ gives 7pi/6 and 11pi/6

  27. Shawna17
    • 2 years ago
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    so it's B

  28. ZeHanz
    • 2 years ago
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    Yup!

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