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BenjaminE

  • 3 years ago

Write an expression for the point P. [PIC] The picture is sadly enough incomplete, but lets say r=1 as in the unit circle.

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  1. BenjaminE
    • 3 years ago
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    Here it is.

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  2. vf321
    • 3 years ago
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    I'll keep r symbolic. If the line that leads from the x-axis to point P is perpendicular to the x-axis, what is p's x-value?

  3. BenjaminE
    • 3 years ago
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    aha, r. But what about y.

  4. vf321
    • 3 years ago
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    Well, I'd suggest removing the circle from your drawing and keeping v and your new x value.

  5. vf321
    • 3 years ago
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    What does it look like? (Use the 'Draw' feature under the reply box)

  6. BenjaminE
    • 3 years ago
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    |dw:1345848002791:dw| tan v = y/r r tan v = y P = ( r, r tan v) ?

  7. vf321
    • 3 years ago
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    Right

  8. BenjaminE
    • 3 years ago
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    Thank you!

  9. vf321
    • 3 years ago
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    YW. Don't forget to close the question.

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