In the diagram, P, Q and R are three points in a plane such that…

In the diagram, P, Q and R are three points in a plane such that the bearing of R from Q is 110^o and the bearing of Q from P is 050^o. Find angle PQR.

Correct Answer: Option C

Explanation

Q₁ = 50(alternate angle)
Q₂ = 180^o – 110^o (straight line angle)
Q₂ = 70
PQR = Q₁ + Q₂
= 50^o + 70^o
= 120^o