Home » In the diagram, GI is a tangent to the circle at H. If EF//GI, calculate…

In the diagram, GI is a tangent to the circle at H. If EF//GI, calculate…

In the diagram, GI is a tangent to the circle at H. If EF//GI, calculate the size of

A.
126^o
B.
72^o
C.
64cm^o
D.
32cm^o

Correct Answer: Option B

Explanation

F = 54^o (Alternate triangle angles) o(Angle between a chord and a tangent = angles in the alternate segment)
Now, o(Angles on a straight line)
54^o + o = 180^oo – 108^o
= 72^o