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animalsavior94

  • 3 years ago

convert the rectangular equation to polar form. assume a is less than 0. x=10

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  1. amistre64
    • 3 years ago
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    (10,0)

  2. amistre64
    • 3 years ago
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    oh, the equation, not the point lol

  3. animalsavior94
    • 3 years ago
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    yeah haha could you please show the work? thank you

  4. amistre64
    • 3 years ago
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    r cos(t) =10 r = 10/cos(t)

  5. animalsavior94
    • 3 years ago
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    where did u get t from?

  6. amistre64
    • 3 years ago
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    well, x = r cos(t) thats just by definition

  7. amistre64
    • 3 years ago
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    so, r cos(t) = 10 is a direct translation to polar form

  8. animalsavior94
    • 3 years ago
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    do you mean theta?

  9. amistre64
    • 3 years ago
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    i dont think I did the divide right tho

  10. amistre64
    • 3 years ago
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    yes; t = theta ... it really doesnt matter what you call it, it never comes when called

  11. animalsavior94
    • 3 years ago
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    ohh ok thanks i was just checking because i was confused. anyways so the answer is r=10/cos theta

  12. amistre64
    • 3 years ago
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    maybe, i cant remember if the divide by 0 applies to mess things up with

  13. animalsavior94
    • 3 years ago
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    im not sure either its quite confusing

  14. amistre64
    • 3 years ago
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    I know to get a straight line; which is what x=10 is; you keep the theta a constant... but id have to read up on it again

  15. animalsavior94
    • 3 years ago
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    i think tthe answer is right because some of my other answers ended with r=///// so it should be right hold on no the answer is r=10 sec theta

  16. animalsavior94
    • 3 years ago
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    how do you get secant?

  17. amistre64
    • 3 years ago
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    r = sec and 1/cos are the same thing

  18. amistre64
    • 3 years ago
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    \[sec = \frac{1}{cos}\]

  19. amistre64
    • 3 years ago
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    \[\frac{10}{cos}=10 sec\]

  20. animalsavior94
    • 3 years ago
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    i see thanks so much for your explanations

  21. amistre64
    • 3 years ago
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    youre welcome :)

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