Analytic Geometry
posted by Jean .
Given that the slope of a line is 91, what is its inclination?
please help thanks..:)

Slope can be calculated from Δy/Δx, that is the change in y divided by the change in x. This is the same as the tangent of the angle with the xaxis.
Inclination is the angle between a line or a plane with another reference object. In 2D analytic geometry, inclination would be measured from the xaxis, which in turn would be arctan(slope).