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# Tag Archives: angle between two vectors

## The angle between two vectors, Python version

I posted a VBA function to return The angle between two vectors, in 2D or 3D last year, and have just discovered that Python and Numpy are lacking this function. Since all the suggested code I found in a quick search used: Cos θ … Continue reading

Posted in Coordinate Geometry, Excel, Link to Python, Maths, Newton, NumPy and SciPy
Tagged angle between two vectors, Numpy, Python, PyXLL
10 Comments

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

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