y distance = 90 + 70 = 160
x distance = 40
want hypotenuse
d = sqrt (40^2 + 160^2)
a ship sails due north from port 90 km,than 40 km east and then 70 km north, how far is the ship from port
4 answers
why sir?? i cant understand why ?
you went a total of 160 straight north
you went 40 east
draw that on a graph, 40 right, 160 up
the angle between north and east is 90 deg
so you want the hypotenuse of that right triangle.
you went 40 east
draw that on a graph, 40 right, 160 up
the angle between north and east is 90 deg
so you want the hypotenuse of that right triangle.
oh i get it thank you