angle of inclination; tilt angle
Technical term used in geometry, engineering, and physics to describe the angle between a line or plane and a reference plane, typically the horizontal.
The angle of inclination of this slope is about 30 degrees.
If the tilt angle is too steep, vehicles cannot climb it.
Compound of 傾斜 (keisha, 'inclination, slope') and 角 (kaku, 'angle'). The reading is the standard on'yomi for each kanji.