camillle56 camillle56
  • 21-04-2019
  • Mathematics
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khaif
khaif khaif
  • 21-04-2019

17.

radius of circle c =10units

diameter=20units.

√[(AB)^2+(diameter)^2]

√[(48)^2+(20)^2]=52units

this proves <ABC=90°

therefore AB is tangent to circle C.

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