hey there...
need guidance to solve my vector problem here.. =)
Let Rd = (a)i + (6)j + (1)k be the position vector of point D.
Determine the value of a so that D lies in the plane ABC
ABC plane => x + 6y -8z = 5
hey there...
need guidance to solve my vector problem here.. =)
Let Rd = (a)i + (6)j + (1)k be the position vector of point D.
Determine the value of a so that D lies in the plane ABC
ABC plane => x + 6y -8z = 5
In order that
$\displaystyle \mathbf{R}_D=a\mathbf{i}+6\mathbf{j}+\mathbf{k}$
point from the origin to a point on
$\displaystyle x+6y-8z=5,$
it is enough that the components of $\displaystyle \mathbf{R}_D$ satisfy the equation that defines the plane: that is, that
$\displaystyle a+6\cdot 6-8\cdot 1=5.$