# Touch circle

Point A has a distance IA, kl = 10 cm from a circle k with radius r = 4 cm and center S.
Calculate:
a) the distance of point A from the point of contact T if the tangent to the circle is drawn from point A
b) the distance of the contact point T from the line SA

x =  14.5602 cm
v =  4.1601 cm

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