Mathematics
The angle between a line AB and the diameter of a circle is 90°; line AB is :
a tangent of the circle
not a tangent of the circle
nothing can be said
Circles
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Answer
The angle between a line AB and the diameter of a circle is 90°; line AB can be either a tangent of the circle or cannot be a tangent of the circle.
Thus, nothing can be confirmed.
Hence, option 3 is the correct option.
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