Tag Archives: cosine rule

The angle between two vectors, in 2D or 3D

Posted on 12/01/2013 by dougaj4

Finding the angle between two lines in 2D is easy, just find the angle of each line with the x-axis from the slope of the line and take the difference. In 3D it is not so obvious, but it can … Continue reading →

Posted in Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA | Tagged 3D angle, angle between two vectors, cosine rule, Excel, UDF, VBA, vectors | 9 Comments

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Tag Archives: cosine rule

The angle between two vectors, in 2D or 3D

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