Q. 135.0( 1 Vote )

# Using vectors, find the area of the triangle ABC with vertices A (1, 2, 3), B (2, –1, 4) and C(4, 5, –1).

Answer :

Given vertices of ΔABC are A (1, 2, 3), B (2, –1, 4) and C (4, 5, –1).

Now,

∴Area of ∆ABC

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