Determine whether a tangent line is shown m the diagram for

Determine whether a tangent line is shown m the diagram, for AB = 7. OB = 3 75 and AO = 8, Explain your reasoning. (The figure is not drawn to scale.)

Solution

If a tangent line is shown then the angle between the AB and BO ( which should be the radius) then should be 90

So, 7^2 +3.75^2 = 49+14.065 63.065
This is not equal to AO^2 = 8^2

Hence, AB is not a tangent