Physics help? never done before ? vectors

Question

A surfer wishes to paddle directly across a 128 metre-wide river that is flowing at 2.8 metres per second. If she can paddle at 3.9 metres per second at what angle should she head in order to arrive on the bank opposite? (The required angle is measured from a line drawn directly across the river.)

Give your answer in degrees and round it to the nearest whole degree.

Heading (degrees) =

Answer 1

Heading (degrees) = 44d 6' 52.63"

= 44d.

Since

2,8 = 3.9 Cos(Heading)