Question

A boat is heading due north as it crosses a wide river with a velocity of 10km/hr relative to the water.the river has a velocity of 5km due east determine the velocity of the boat with respect on the river bank
Draw the velocity vectors.
The boat's speed s = √(10^2+5^2)
The boat's angle relative to the direct crossing line is NθE where tanθ = 5/10
Now, what is θ relative to the bank?

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