Q13. Which of the following sets of angles (α, β, γ) can represent the direction angles of a vector? A valid set of direction angles must satisfy the relation cos2 α + cos2 β + cos2 γ = 1.Physics — Vectors — Question 13 of 13A. 60°, 45°, 90°B. 45°, 45°, 45°C. 60°, 30°, 30°D. 60°, 60°, 45°Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question