The position of three ships P,Q and R at sea are illustra...
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
Correct answer is C
< 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
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