How to convert slope to degrees?

Answer 1

Conventionally slope is (delta y)/(delta x) which is the tangent of the angle the slope makes with the x-axis. ----

consider that, and thus assume a point relative to (0,0) where:

x = 1

y = slope also, this little formula:

Tan( theta ) = y / x and we get:

theta = ArcTan( slope )

(not the nonsensical 90/(slope+1) that I edited away....that just makes no sense)