A tugboat is travelling from Asaba to Onitsha across the River Niger with a resultant velocity of 20 knots. If the river flows at 12 knots, the direction of motion of the boat relative to the direction of water flow is?
A
36.87o
B
53.13o
C
90o
D
136o
E
143.13o
Verified Correct Answer: B.
Physical Principles & Numerical Solution
\(\theta\) = cos-1\(\frac{(12)}{20}\)
\(\theta\) = 53.13^\circ
Source: WAEC / JAMB / NECO Classroom Archive (Record #29102)