In the diagram, GI is a tangent to the circle at H. If EF//GI, calculate the size of < EHF
Attached Figure / Diagram
A
126o
B
72o
C
64cmo
D
32cmo
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
F = 54o (Alternate triangle angles)
o(Angle between a chord and a tangent = angles in the alternate segment)
Now, o(Angles on a straight line)
54o + o = 180o
o - 108o
= 72o
Source: Myschool Past Questions Archive (Record #36610)