Q. 23.8( 5 Votes )

# Show that t

Answer :

we know that line and are coplanar if And equation of the plane containing them is Here, equation of lines are and So, x1 = – 1, y1 = 3, z1 = – 2, l1 = – 3, m1 = 2, n1 = 1

x2 = 0, y2 = 7, z2 = – 7, l2 = 1, m2 = – 3, n2 = 2

so,   = 1(4 + 3) – 4(– 6 – 1) – 5(9 – 2)

= 7 + 28 – 35

= 0

So, lines are coplanar

Equation of plane containing line is (x + 1)(4 + 3) – (y – 3)(– 6 – 1) + (z + 2)(9 – 2) = 0

7x + 7 + 7y – 21 + 7z + 14 = 0

7x + 7y + 7z = 0

X + y + z = 0

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