David is rowing a boat Upstream the river is Flowing at a speed of 2 miles per hour David starts rowing a speed of 6 miles per h
our but as he gets tired his speed decreases at a rate of 1 miles per hour every hour. which equation represents a speed of the boat for X hours spent rowing
One very simple way is to put it in a Ti-84 calculator which shows that cos(105) is -0.2409590492 and sin(15) as 0.6502978402 which you can find online.
