WAEC - Mathematics (2012 - No. 39)
The position of three ships P,Q and R at sea are illustrated in the diagram. The arrows indicated the North direction. The bearing of Q from P is 050o and < PQR = 72o. Calculate the bearing of R and Q
155o
80o
158o
91o
Maelezo
< NPQ = < PQB = 50º(alt. < s)
< PQB = 50º
< PQR = < PQR < PQB + < QBR = 72º
< QBR = < PQR - < PQB = 72º - 50º
= 22º
< NQR = 180 - < QBR = 180º - 22 = 158º, the bearing of R from Q = 158º