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If a line is drawn through a fixed point...

If a line is drawn through a fixed point `P(alpha,beta)` to cut the circle `x^(2)+y^(2)=a^(2)` at A and B , then find the value of PA. PB

A

`(alpha-beta)^(2)+r^(2)`

B

`alpha^(2)+beta^(2)-r^(2)`

C

`(alpha+beta)^(2)+r^(2)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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