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# Tag Archives: 3D angle

## Precise Angles and XNumbers

Further to comments by Georg under: The angle between two vectors, in 2D or 3D I have added four alternative ways of calculating the angle between two 3D vectors to the VectorFunc spreadsheet. The new version can be downloaded from: http://interactiveds.com.au/software/VectorFunc.xlsb. … Continue reading

## 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
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