In the figure above find the value of y - JAMB Mathematics 1991 Question

In the figure above, find the value of y

A

28^o

B

122^o

C

150^o

D

152^o

correct option: b

ADB = 180^o - 152^o = 28^o

28^o + y + 30^o = 180^o

y = 180^o - 58^o

= 122^o

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