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
Vysvětlení
x = 90 x sin30 = 45o
∴Dist = 150 + 45 = 195km
x = 90 x sin30 = 45o
∴Dist = 150 + 45 = 195km