A plane tiles 90km on a bearing 030 and then fl... - WAEC Mathematics 1993 Question
A plane tiles 90km on a bearing 030° and then flies 150km due east. How far east of the starting point is the plane?
A
120km
B
165km
C
195km
D
(150 + 45√3)km
correct option: c
complete x as in the diagram. x/90 = sin30o
x = 90 x sin30 = 45o
∴Dist = 150 + 45 = 195km
x = 90 x sin30 = 45o
∴Dist = 150 + 45 = 195km
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