The position vectors of the vertices A, B, C of a tetrahedron ABCD are î + ĵ + k̂, î and 3î respectively and the altitude from the vertex D to the opposite face ABC meets the face at E. If the volume of tetrahedron is <span class="math-tex">\(\frac {2\sqrt 2} 3\)</span>, then the length of DE is:
Correct Option is B. Practice regular variations of this Scalar and Vector Products concept to build speed and accuracy.
Reinforce your conceptual grasp with related questions from NIMCET 2019:
Take timed full-length mock tests with authentic question distributions, negative marking (+12/-3 in Math), and instant All India Rank calculation.
Start Free Mock Test Series →