WAEC - Mathematics (1995 - No. 32) | ExamPlay

WAEC - Mathematics (1995 - No. 32)

In the diagram above, AO is perpendicular to OB. Find x

7.5^o

15^o

22.5^o

30^o

38.6^o

Explanation

4x + 3x + 2x + 90 =360° [angle at a point]

9x + 90 = 360°

9x = 360° - 90°

9x = 270

x = 270/9

x = 30°

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