Q. 5 C5.0( 1 Vote )

# Find the value of λ so that the following vectors are coplanar.

Answer :

Formula : -

Given: -

we know that vector are coplanar if their scalar triple product is zero

we have

now, using

⇒ 0 = 1(2 λ – 2) – 2(6 – 1) – 3(6 – λ)

⇒ 0 = 5 λ – 30

⇒ λ = 6

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