1. Find isOrthogonal(A,B)
`A=(3,4,0)`,`B=(-4,3,2)`

Solution:
Here `vec A=(3,4,0),vec B=(-4,3,2)`

Two vectors `vec A` and `vec B` are orthogonal, if their dot product is zero. i.e. `vec A * vec B = 0`

1. Calculate dot product
`vec A * vec B`

`=A_1*B_1 + A_2*B_2 + A_3*B_3`

`=3*(-4) + 4*3 + 0*2`

`=-12 + 12 + 0`

`=0`

Here dot product is zero, so vectors are orthogonal