AC is tangent to circle O at point C. What is the length of OC

Mathematics

1 answer:

Sedaia [141]3 years ago

6 0

Let OC is x, so OC=OB=x

${4}^{2} + x^{2} = {(2 + x)}^{2} \\ 16 + {x}^{2} = 4 + 4x + {x}^{2} \\ 12 = 4x \\ x = 3$

Answer: OC=3 points

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