In the diagram lt WOX 60o lt YOE 50o and lt OXY... - WAEC Mathematics 2010 Question

The bearing of x from y = 270^o + (\theta)

where (\theta) + 50^o = y

in (\bigtriangleup) OXY

O + X + Y = 180^o

Where O = 40^o + 30^o = 70^o

70^o + 30^o + y = 180^o

y + 100^o = 180^o

y = 180^o - 100^o = 30^o

(\theta) + 50^o = 80^o

80^o - 50^o = 30^o

The bearing of x from y = 270^o + 30^o = 300^o