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WAEC - Mathematics (1993 - No. 27)

A plane tiles 90km on a bearing 030° and then flies 150km due east. How far east of the starting point is the plane?
120km
165km
195km
(150 + 45√3)km
240km

Обяснение

complete x as in the diagram. x/90 = sin30o
x = 90 x sin30 = 45o
∴Dist = 150 + 45 = 195km

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