Question

the tangent at the point of a circle is perpendicular to the radius though the point of contact​

Answer 1

Answer:

Suppose OB meets the circle in C. Proof: We know that, among all line segment joining the point O to a point on l, the perpendicular is shortest to l. ... B is an arbitrary point on the tangent l. Thus, OA is shorter than any other line segment joining O to any point on l.

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Answer 2

Answer:

Answer:yes

1. Answer:yes a line which touches to the circle at a single point is called tangent
2. Answer:yes a line which touches to the circle at a single point is called tangent always the angle between tangent and radius of circle are perpendicular to each other
3. Answer:yes a line which touches to the circle at a single point is called tangent always the angle between tangent and radius of circle are perpendicular to each other and the angle made between tangent and radius of circle is 90 degrees