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lara31 [8.8K]
3 years ago
5

Determine if line AB is tangent to the circle.

Mathematics
1 answer:
Charra [1.4K]3 years ago
6 0

Answer:

7) No

8) Yes

Step-by-step explanation:

Tangent lines are perpendicular to the radius lines at the point of intersection.  So we just need to check if these are right triangles.

7) c² = a² + b²

20² = 12² + 14²

400 = 340

No

8) c² = a² + b²

13² = 7.8² + 10.4²

169 = 169

Yes

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