Find the vector equation of the plane passing through three points with position vectors and
Also, find the coordinates of the point of intersection of this plane and the line
Let A, B and C be three point with position vector and
Thus,
As we know that cross product of two vectors gives a perpendicular vector so
So, the equation of the required plane is
Also we have to find the coordinates of the point of intersection of this plane and the line
Any point on the line is of the form, p(3 + 2
, – 1 – 2
, – 1 +
)
Point p(3 + 2, – 1 – 2
, – 1 +
) lies in the plane,
so,
9(3 + 2) – 3(– 1 – 2
) – (– 1 +
) = 14
27 + 18 – 3 – 6
+ 1 –
= 14
11 = – 11
= – 1
Thus the required point of intersection is
p(3 + 2, – 1 – 2
, – 1 +
)
put value of in this equation
p[3 + 2(– 1), – 1 – 2(– 1), – 1 + (– 1)]
p(1, 1, – 2)