Prove that the four points 6i^−7j^,16i^−19j^−4k^,3j^−6k^and2i^+5j^+105^ form a tetrahedron in space.

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Prove that the four points {6}{{i}}-{7}{{j}},{16}{{i}}-{19}{{j

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Prove that the four points $6 \hat{i} - 7 \hat{j}, 16 \hat{i} - 19 \hat{j} - 4 \hat{k}, 3 \hat{j} - 6 \hat{k} a n d 2 \hat{i} + 5 \hat{j} + 10 \hat{5}$ form a tetrahedron in space.

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Prove that the four points

6 \hat{i} - 7 \hat{j}, 16 \hat{i} - 19 \hat{j} - 4 \hat{k}, 3 \hat{j} - 6 \hat{k} a n d 2 \hat{i} + 5 \hat{j} + 10 \hat{5}

form a tetrahedron in space.

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Prove that the four points

6 \hat{i} - 7 \hat{j}, 16 \hat{i} - 19 \hat{j} - 4 \hat{k}, 3 \hat{j} - 6 \hat{k} a n d 2 \hat{i} + 5 \hat{j} + 10 \hat{5}

form a tetrahedron in space.