In the following figure, $O$ is the centre of the circle. $P A$ and $P B$ are the tangents to the circle at points $A$ and $B$ respectively. If $l (P A) = 7 c m$ , then find $l (P B)$ (in $c m$ ).

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Solution

$P A = 7 c m$ (Given)
$∴ P A = P B = 7 c m$ (The length of the two tangent segments to a circle drawn from an external point are equal.)
$P B = 7 c m$

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In the following figure, O is the centre of the circle. PA and PB are the tangents to the circle at points A and B respectively. If l(PA)=7 cm, then find l(PB) (in cm).

PA=7 cm (Given)∴PA=PB=7cm (The length of the two tangent segments to a circle drawn from an external point are equal.)PB=7 cm

In the following figure, $O$ is the centre of the circle. $P A$ and $P B$ are the tangents to the circle at points $A$ and $B$ respectively. If $l (P A) = 7 c m$ , then find $l (P B)$ (in $c m$ ).

$P A = 7 c m$ (Given)
$∴ P A = P B = 7 c m$ (The length of the two tangent segments to a circle drawn from an external point are equal.)
$P B = 7 c m$