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Secant of a Curve y =f(x)

If AC, BC a...

Question

If $A C, B C$ and $A B$ are tangents to circle at $Q, R$ and $P$ respectively. $A P = x, B R = y, C Q = z$ find $A B$ .

A

x

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B

y + z

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C

y + x

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D

y

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Solution

The correct option is C $y + x$
In given figure

$A B = A P + P B$

$A B = x + B R$

$A B = x + y$ .... $(∵ B P = B R = y)$ (Tangents drawn from an external point to a circle)

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