WAEC - Mathematics (1989 - No. 10) | ExamPlay

WAEC - Mathematics (1989 - No. 10)

The angle of elevation of X from Y is 30^o. If XY = 40m, how high is X above the level of Y?

10m

20m

20√3m

40m

50m

Explanation

XZ = 40 x sin30^o
= 20m

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