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

155^o

80^o

158^o

91^o

Correct answer is C

< NPQ = < PQB = 50^o(alt. < s)

< PQB = 50^o

< PQR = < PQR < PQB + < QBR = 72^o

< QBR = < PQR - < PQB = 72^o - 50^o

= 22^o

< NQR = 180 - < QBR = 180^o - 22 = 158^o, the bearing of R from Q = 158^o

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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

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