Question

A cyclist travels a distance of 4 km from AtoBand then moves a distance of 3km at right angles to the AB find its resultant displacement

Answer 1

This can help you it is write

Answer 2

distance from A to B= 4 km
let the third point be C,
distance from B to C= 3 km
the resultant, ac^2= ab^2+bc^2
ac^2=4^2+3^2
ac^2=16+9
ac^2=25
ac=(25)^(1/2)
ac=5 km
therefore ,the resultant ac=5 km