Construction Of Tangent To Circle

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An illustration showing how to construct a tangent to a circle through a given point outside of a circumference. “Join A and C, and upon AC as a diameter draw the half circle ABC, which cuts the given circle at B. Join A and B, which is the required tangent.”


Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 35


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