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show that the absolute value of the focal distances of any point P on the hyperbola in the length of its transverse axis.

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Knowledge Check

  • The distance of the point P(a,b,c) from the z axis is

    A
    `sqrt(a^(2)+b^(2))`
    B
    `sqrt(a^(2)+c^(2))`
    C
    `sqrt(b^(2)+c^(2))`
    D
    `sqrt(a^(2)+b^(2)-c^(2))`
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    N is the foot of the perpendicular from P on the transverse axis. The tangent to the hyperbola at P meets the transverse axis at T. If O is the center of the hyperbola the OT.ON is equal to:

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