Theory of Intelligence
11TH•Mathematics•Vectors In Space•Question 2

(iii)

Find a unit vector perpendicular to the plane containing $\mathbf{a}$ and $\mathbf{b}$. Also find sine of the angle between them:

(iii)

a=i+j+k\mathbf{a} = \mathbf{i} + \mathbf{j} + \mathbf{k}, b=i−j−k\mathbf{b} = \mathbf{i} - \mathbf{j} - \mathbf{k}

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