O. A Tangent pa at point p of airch of radius 5 ang
and muts a line through contre o at a, such that
og is a 8 12 . Find the length.
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Step-by-step explanation:
Given-
O is the center of a circle of radius 5cm,
PQ is a tangent to the given circle at P.
PQ meets the line OP passing through O & P.
OQ=12cm.
To find out- PQ
Solution-
We join OP.
Then OP is a radius of the given circle through the point of contact P of the tangent QP.
∴OP⊥QP
i.e ∠OPQ=90
o
....The angle between a tangent and the radius through the point of contact is 90
o
∴ΔOPQ is a right one with OQ as the hypotenuse.
So, applying Pythagoras theorem, we have
PQ=
OQ
2
−OP
2
=
12
2
−5
2
cm=
119
cm.
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