Question

Let α, β and γ be distinct real numbers. The points with position vectors αi + βj + γk, βi + γj + αk and γi + αj + βk

(a) are collinear

(b) form an equilateral triangle

(c) form a scalene triangle

(d) form a right angled triangle.

Answer 1

Answer is (b) form an equilateral triangle

Explanation:

Therefore, ΔPQR is an equilateral triangle.