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2 years ago

How would I determine whether AB is tangent to oc? The o is a circle dot

Mathematics

1 answer:

icang [17]2 years ago

3 0

Answer:

see explanation

Step-by-step explanation:

If AB is a tangent then ∠ ABC = 90° and Δ ABC is right

Using the converse of Pythagoras' identity

If the square of the longest side is equal to the sum of the squares on the other 2 sides.

15 is the longest side and 15² = 225

9² + 12² = 81 + 144 = 225

Thus Δ ABC is a right triangle at B

Thus AB is a tangent to the circle at B

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Answer:

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Step-by-step explanation:

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2 years ago