Chord 2

Point A has distance 13 cm from the center of the circle with radius r = 5 cm. Calculate the length of the chord connecting the points T1 and T2 of contact of tangents led from point A to the circle.

Correct result:

x =  9.23 cm

Solution:

a=5 cm c=13 cm b2=13252 b=12 cm S1=S2 ab/2=cv/2 ab/c=v v=512/13=4.62 cm  x=2v=9.23 cm



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