a pair of tangent can be construct in a circle of radius 3.5cm pis inside the circle
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Given a point outside a circle, to construct a line through the point tangent to the circle. Let M be the midpoint of OA. ... Since the tangent is perpendicular to the radius to the point of tangency, by the uniqueness of the line through C perpendicular to OC, AC is tangent to the circle.
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Outside circle
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