Question: Verify Lagranges identity for |a x b| for a = [3, 4, 2] and b = [1, 0, 2]. Prove it, using sin 2 γ

Verify Lagrange€™s identity for |a x b| for a = [3, 4, 2] and b = [1, 0, 2]. Prove it, using sin2γ = 1 - cos2 Î³. The identity is

|a x b| = V(a • a) (b • b) – (a • b)?. (12)

|a x b| = V(a a) (b b) (a b)?. (12)

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