### Problem 1.9

#### Task:

A boat moves relative to water with a velocity which is \( n = 2.0 \) times less than the river flow velocity. At what angle to the stream direction must the boat move to minimize drifting?

A boat moves relative to water with a velocity which is \( n = 2.0 \) times less than the river flow velocity. At what angle to the stream direction must the boat move to minimize drifting?