Before revision: Tangent as a ratio The slope expressed as a percentage can similarly be determined from the tangent of the angle: Angle from a tangent gradient If the tangent is expressed as a percentage, the angle can be determined as: If the angle is expressed as a ratio ( 1 in n) then: Example slopes comparing the notations For degrees, percentage (%) and per-mille (‰) notations, larger numbers are steeper slopes.
After revision: Tangent as a ratio The slope expressed as a percentage can similarly be determined from the tangent of the angle: Angle from a tangent gradient If the tangent is expressed as a percentage, the angle can be determined as: c 1 n</math> Example slopes comparing the notations For degrees, percentage (%) and per-mille (‰) notations, larger numbers are steeper slopes.