In the diagram, o, o and o. What is the bearing of x from y?

In the diagram, o, o and o. What is the bearing of x from y?

Correct Answer: Option A

Explanation

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