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trigonometrythe function that returns tangent of an angle.
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geometry(of a plane or line) touching a curve or surface at only one point."The line is tangent to the circle at point A."
In math, the term “tangent” has several uses depending on the context.
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In trigonometry, tangent is one of the primary trigonometric functions.
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In geometry, a tangent refers to a straight line or plane that touches a curve at a single point without crossing through it at that point.
A right triangle (or right-angled triangle) is a triangle in which one of the angles is a right angle (90 degrees). The side opposite the right angle is called the hypotenuse, and it is the longest side. The other two sides are known as the adjacent and opposite sides, relative to the non-right angle being referenced.
An angle is the figure formed by two rays sharing a common endpoint called the vertex. Its size, measured in degrees or radians, is the amount of rotation needed to align one ray with the other.
The tangent function returns the tangent ratio of the input angle. In geometric terms, the function returns the length of the line tangent to the point on the unit circle.