MathsJEE Main 6 Apr 2026, Shift 2·Q15·MCQ·Easy–moderate

Vectors · Area of triangle by cross product

Let

\vec a = 2\hat i + 3\hat j + 3\hat k

and

\vec b = 6\hat i + 3\hat j + 3\hat k

. Then the square of the area of the triangle with adjacent sides determined by the vectors

\left(2\vec a + 3\vec b\right)

and

\left(\vec a - \vec b\right)

is:

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