The angle between the vectors A→ and B→ is θ. The value of the triple product A→ .( B→ ×A→) is
A2B
Zero
A2Bsinθ
A2Bcosθ
Let A→ .( B→ ×A→) = A→.C→
Here C→ = B→ ×A→, which is perpendicular to both vectors.
A→ and B→ ∴ A→.C→ = 0