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

MATHEMATICS

WAEC 2006

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.

A. 60^o
B. 70^o
C. 120^o
D. 160^o

Correct Answer: C. 120^o

Explanation

Q₁ = 50(alternate angle)

Q₂ = 180^o - 110^o (straight line angle)

Q₂ = 70

PQR = Q₁ + Q₂

= 50^o + 70^o

= 120^o

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

Correct Answer: C. 120o

Explanation

Correct Answer: C. 120^o