From an external point $P$, $PA$ is tangent to a circle with centre $O$ at $A$. $OA=9$ cm

Question

From an external point $P$, $PA$ is tangent to a circle with centre $O$ at $A$. $OA=9$ cm and $PA=10$ cm. Calculate $OP$, giving your answer correct to 3 significant figures.

Accepted Answer

$13.454$ cm.

Sec 3/4 E Math T11-Q16 - Radius and tangent at a point of contact

Sec 3/4 E Math T11-Q16 - Radius and tangent at a point of contact

Solution:

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