In the diagram, P, Q and R are three points in a plane such that the bearing of R from Q is 110o and the bearing of Q from P is 050o. Find angle PQR.
Attached Figure / Diagram
A
60o
B
70o
C
120o
D
160o
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Q1 = 50(alternate angle)
Q2 = 180o - 110o (straight line angle)
Q2 = 70
PQR = Q1 + Q2
= 50o + 70o
= 120o
Source: Myschool Past Questions Archive (Record #36207)