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In the diagram above EFGH is a cyclic quadrilat... - JAMB Mathematics 1999 Question

In the diagram above, EFGH is a cyclic quadrilateral in which EH//FG, EG and FH are chords. If ∠FHG = 42o and ∠EFH = 34o, calculate ∠HEG
A
34o
B
42o
C
52o
D
76o
correct option: c

∠EFH = ∠EGH(∠s in same segment)

= 34o

∠HEG = ∠HFG(∠s in same segment)

= X

also ∠HFG = ∠EHF (alternate ∠s)

But ∠EHG + ∠EFG =180(opp sof a cyclic quad)

42 + x + 34 + x = 180

2x + 76 = 180

2x = 180 - 76

2x = 104

x = 52o

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