Vector Algebra Question 176
Question: If the position vectors of the vertices of a triangle be $ 6\mathbf{i}+4\mathbf{j}+5\mathbf{k},,4\mathbf{i}+5\mathbf{j}+6\mathbf{k} $ and $ 5\mathbf{i}+6\mathbf{j}+4\mathbf{k}, $ then the triangle is
Options:
A) Right angled
B) Isosceles
C) Equilateral
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
- Equilateral, since each side is of length $ \sqrt{6}. $
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