The area of the triangle with one vertex at the origin, and made by the three vectors, -4j+5i,4j, and 5i, is?

a)20 b)9 c)1 d)unlimited

The area of the triangle with one vertex at the origin, and made by the three vectors, -4j+5i,4j, and 5i, is?
5i-4j = [5,-4]


4j = [0,4]


5i= [5,0]


By the component, you can draw the vetors.


the area will be 10 units square


A = 1/2 *5 *4 = 10 unit square
Reply:d. unlimited as triangle is open.