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Precalculus

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Write y^2 + 8x = 0 in polar form.

  • Precalculus -

    we know that x^2 + y^2 = r^2
    so y^2 = r^2 - x^2
    also sinØ = x/r
    x = rsinØ
    x^2 = r^2 sin^2 Ø

    so y^2 + 8x = 0
    r^2 - x^2 + 8x = 0
    r^2 - r^2 sin^2 Ø + 8r sinØ = 0

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