A person walks 25 northeast 3.10km.How far would she have to walk due north and due east to arrive at the same point?

Answer 1

3.10km[25o]. 3.1*sin25 = 1.31 km
due north, 3.1*Cos25 = 2.81 km due east.

I assumed you meant 25o N. of E, because northeast = 45o.