Question

Please help me with this math problem

Answer 1

When a tangent line (13.5 cm) and a secant (lines x + 8.45 cm) intersect then:

tangent line^2 = 8.45 * (8.45 + x)

13.5^2 = 71.4025 + 8.45 x

182.25 -71.4025 = 8.45x

8.45 x = 110.8475

x = 13.1180473373

x = 13.1 (rounded)

Source:

1728.com/circangl.htm