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If A(at^2, 2at), B((a)/(t^2) , - (2a)/(t...

If `A(at^2, 2at), B((a)/(t^2) , - (2a)/(t))` and `C(a, 0)` be any three points, show that `1/AC + 1/BC` is independent of `t`.

A

a

B

t

C

both a and t

D

none of these

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The correct Answer is:
B
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MCGROW HILL PUBLICATION-CARTESIAN SYSTEM OF RECTANGULAR COORDINATES AND STRAIGHT LINES -EXERCISE (LEVEL 1) SINGLE CORRECT ANSWER TYPE QUESTIONS
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