Chemistry, 05.08.2020 17:01 throwdown31

a boy capable of swimming 2.1m/a in still water is swimming in a river with a 1.8 m/a current. At what angle must he swim in order to end up directly opposite his starting point?

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a boy capable of swimming 2.1m/a in still water is swimming in a river with a 1.8 m/a current. At wh...