The angle inclination of a line is the angle formed by the intersection of the line and the x-axis. Using a horizontal "run" of 1 and m for slope, the angle of inclination, theta=tan-1(m), or m=tan(theta). ... This is the angle of inclination theta it's the angle that a line makes with the horizontal.

What is the difference between inclination and angle?

Angles of elevation or inclination are angles above the horizontal, like looking up from ground level toward the top of a flagpole. Angles of depression or declination are angles below the horizontal, like looking down from your window to the base of the building in the next lot.

What is inclination and slope?

Inclination and slope of a line

Inclination of a line is the angle between the line and the positive direction of x−axis. ... It is measured in anti-clockwise direction from the x−axis. If inclination angle is known: Slope of a line is the tangent of the angle of inclination. It is denoted by m.