O is the centre of the circle of radius 18cm. Line l is tangent to the circle at point A. What is the distance of O from line l.
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Answered by
1
Answer:
OAB=90
∘
(as a tangent is perpendicular to a circle's radius)
∴ΔOAB is right angled triangle
∴ Applying pythogorous theorem,
OB
2
=OA
2
+AB
2
∴OB
2
=8
2
+5
2
∴OB
2
=64+25=89
∴OB=
89
cm
Hence value of OB is
89
cm
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0
Answer:
above answers is right✅ can you mark as Brainlest please
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