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user100 [1]
3 years ago
11

Determine if line AB is tangent to the circle.

Advanced Placement (AP)
1 answer:
Rudiy273 years ago
4 0

Answer:

1. AB Is a tangent

2. AB is not a tangent

Explanation:

1. In the given figure

9.7^2 = 7.2^2 + 6.5^2

94.09 = 51.84+42.25

94.09 = 94.09

Hence, angle BAC is 90 degree.

Now any line that touches the circle at one point only and forms a 90 angle with the radius is a tangent

2. In the second figure

22^2 is not equal to 12^2 + 16^2

hence, AB is not a tangent

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