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Hold a ruler level, then slope the ruler to an angle of 45 degrees. The inclination of the ruler is now 45 degrees. So if rock has been altered as to be unlevel, then the angle from the level is the rock beds inclination.
An upwards inclination of the wings on lateral axis and an included angle is known as dihedral angle.
All sections are obtained when a plane intersects the cones.If the plane is parallel to the plane of the circle which generates the cones the section will be a circle.If the plane is inclined to the above plane at an angle that is less than the angle of inclination of the cone, you will get an ellipse.When the inclination of the plane equals the inclination of the cone you will get a parabola.Finally, if the inclination of the plane is greater than the inclination of the cone, you will get a hyperbola.
For every 4.5 rise, the run is 100, hence tangent of the angle of inclination is (4.5/100) = 0.045. Now find out the angle whose tangent is 0.045 from a table or using a calculator. It turns out to be 2.576 degrees