Jet 1 is flying with speed 880 km/h towards EAST
so in vector form we can say
[tex]v_1 = 880 \hat i km/h[/tex]
jet 2 is flying with speed 880 km/h towards North
so in vector form we can say
[tex]v_2 = 880 \hat j km/h[/tex]
so in vector form we can see the two velocities are not same as the direction is different here
so we can say that in vector form two physical quantities are not same if the direction of two are different.
So here we can say that only magnitude is same
So they do not have same velocity but they both will have same speed.