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In the figure above, find the value of y

Mathematics
JAMB 1991
In the figure above, find the value of y
  • A. 28o
  • B. 122o
  • C. 150o
  • D. 152o
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Correct Answer: Option B
Explanation
ADB = 180o - 152o = 28o

28o + y + 30o = 180o

y = 180o - 58o

= 122o
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