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If a tangent segment and a secant segment are drawn to a circle from an exterior, then the square of the
length of the tangent segment is equal to the product of the lengths of the secant segment and its external
secant seginent. What is the measure of a if b = 2 cm and c = 8 cm?
2 cm
c. 8 cmr
b. 4 cm
d. 16 cm
Solution: a = b c​