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WAEC - Mathematics (2006 - No. 39)

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.
60o
70o
120o
160o

Vysvětlení

Q1 = 50(alternate angle)

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

Q2 = 70

PQR = Q1 + Q2

= 50o + 70o

= 120o

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