Class 12 Maths Three Dimensional Geometry | Angle between two lines |

**Angle between two lines (in terms of Direction ratios)**

Let L_{1} and L_{2} be two lines passing through the origin and with direction ratios (a_{1}, b_{1}, c_{1}) and (a_{2}, b_{2}, c_{2}) respectively.

Let P be a point on L_{1} and Q be a point on line L_{2}.

Let ϴ = angle between OP and OQ.

** Note:- **In case the lines L

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