algebra 2
posted by Insky .
suppose you want to row your boat across a 3 mile wide river and row at a speed of 2 mi/hr. the current is flowing south at a rate of 1.2 mi/hr. at what angle upstream should you aim your boat so that it ends up going straight across?

Make a vector diagram, where the distance straight across is your resultant and represents the actual speed , the hypotenuse is 2 and the side opposite our angle is 1.2
sinØ = 1.2/2
Ø = 36.9°