Calculate the value of Y in the diagram
MATHEMATICS
WAEC 1999
Calculate the value of Y in the diagram
- A. 18°
- B. 42°
- C. 48°
- D. 132°
Correct Answer: C. 48°
Explanation
x = 180° - 123° = 57°
z = 180° - 105° = 75°
y = 180° - 57° - 75° = 48°
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