A plane tiles 90km on a bearing 030° and then flies 150km due east. How…

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Mathematics WAEC 1993

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 checkmark
  • (150 + 45√3)km
  • 240km

The correct answer is: C

Explanation

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