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Question

Question: <img src="https://cdn.pureessence.tech/canvas_554.png?top_left_x=523&top_left_y=1490&width=207&heigh...

, , are three non-coplanar vector such that = k then k is-

A

3

B

–3

C

2

D

6

Answer

6

Explanation

Solution

STP = ∣1111−1121−1∣\left| \begin{array} { c c c } 1 & 1 & 1 \\ 1 & - 1 & 1 \\ 2 & 1 & - 1 \end{array} \right|