C is the Ceiling. The larger the value is the steeper the line. Subtract the squared number of the width or length side from the squared number of the sloped side.
How do you find the angle of a sloped ceiling.
How to Calculate the Degrees of Slope on the Ceiling Step 1. Use a level against the underside of the rafter youre measuring to get the most accurate value. Measure the total length from the wall to the highest point of the ceiling. Specify values for the Defines Slope and Slope properties for a single ceiling sketch line.