👉 Tanaist is a term used in the context of mathematics and trigonometry, specifically in the field of calculus. It refers to the angle between the line segment joining two points on a plane (such as the x-axis or y-axis) and an axis perpendicular to that plane. In simple terms, a tanaist is the angle formed by the line connecting any two points on a coordinate plane, such as the x-axis or y-axis. This angle can be found using the tangent function