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#### Barkiernan

##### New member

- Aug 30, 2019

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I need to find the angle of the parable tangent derived from the theoretical arc traced by a foot during a step and the ground (see attached). The arc comprises of a persons step height and step length and I need to find the angle of the arc it creates. No other research regarding this angle has manual calculated it.

I have contacted the researcher and he gave me the following formula:

Stride (step) angle tangent = 4*height / Step length

Therefore, the Stride (step) angle = tan-1(4*height/step length)”

However we are not sure why the height is multiplied by 4 ?

Thank you