Need help urgently

[dollyayesha2345]

If AB=5cm, AO=12cm and BO=13cm, why is it correct to conclude that line must be tangent to the circle at point A?

 

[lev888]

If AB=5cm, AO=12cm and BO=13cm, why is it correct to conclude that line must be tangent to the circle at point A?

Of all possible lines through point A, which one would be tangent to the circle?

 

[dollyayesha2345]

Of all possible lines through point A, which one would be tangent to the circle?

I genuinely don't know which is why I need help ??

 

[Deleted member 4993]

I genuinely don't know which is why I need help ??

What does your textbook/classnotes say about:

In a circle, angle between a tangent line and a radial line intersecting at the point of tangency.