Question

A man starts from point O and first walks 2 km due west and then I km due
south. How far is he from the starting point o?​

Answer 1

Answer:

√5

Step-by-step explanation:

since he turns south from west it will from a right angle at B

∴ ΔAOB is a right angled triangle

distance between current position and origin is =AO

using pythagoras theorem,

AO²=AB²+BO²

AO²=2²+1²

AO²=4+1

A0=√5