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anonymous

  • one year ago

Choose the point on the terminal side of -210°.

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    I am so lost, can someone please help me

  3. freckles
    • one year ago
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    I guess we are to assume r is 1

  4. freckles
    • one year ago
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    \[x=r \cos(\theta) \\ y=r \sin(\theta)\]

  5. anonymous
    • one year ago
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    1cos 1sin

  6. freckles
    • one year ago
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    or maybe r is suppose to be 2

  7. freckles
    • one year ago
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    I don't know r is not given

  8. freckles
    • one year ago
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    but the answers seems to suggest r=2

  9. anonymous
    • one year ago
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    which answer do you suggest i put?

  10. freckles
    • one year ago
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    enter in the r and enter the theta then you can find x and y

  11. freckles
    • one year ago
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    it is weird though they don't tell you what r is

  12. anonymous
    • one year ago
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    ugh this is so confusing

  13. freckles
    • one year ago
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    I gave you the equations

  14. freckles
    • one year ago
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    \[x =r \cos(\theta) \\ y=r \sin(\theta) \\ r=2 \\ \theta=-210^o \\ \text{ you want \to find } (x,y)\]

  15. freckles
    • one year ago
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    just replace r with 2 and replace theta with -210

  16. anonymous
    • one year ago
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    okay so: x=2cos(-210) y=2sin(-210)

  17. freckles
    • one year ago
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    yes

  18. anonymous
    • one year ago
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  19. anonymous
    • one year ago
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    i got that^

  20. freckles
    • one year ago
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    you can use unit circle to get exact answer

  21. anonymous
    • one year ago
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    ok

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spraguer (Moderator)
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