If a→,b→ and c→ are non-zero coplanar vectors, such that a→⋅b→=b→⋅c→=0. If |a→|=1 unit and |c→|=6 units. The value  of |a→⋅c→|. is _________

∵a→⋅b→=b→⋅c→=0It means a→ and b→ are perpendicular to each other. Similarly, b→ and c→ are perpendicular to each other. So, we can say that a→ and c→ are parallel to each other. ∴a→⋅c→=|a∥c|cos⁡0∘=1×6=6 units