waecmaths question:
If $\left| XY \right|=50m$ how far east of X is Y?
Option A:
25.6m
Option B:
40.6m
Option C:
40.8m
Option D:
43.3m
waecmaths solution:
\[\begin{align} & \angle XYZ=\angle NXZ\text{ }\!\!\{\!\!\text{ alternate angles }\!\!\}\!\!\text{ } \\ & \left| XZ \right|=50cm\sin {{60}^{\circ }}=43.3cm \\\end{align}\]
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