Tangent is a mathematical function that measures the slope of a curve at a given point. In the context of the TI-Nspire calculator, the tangent function can be used to find the slope of a curve represented by a graph or equation.
Knowing the tangent of a curve is important for a variety of reasons. For example, the tangent can be used to determine the rate of change of a function, the velocity of an object moving along a curve, or the angle of a line tangent to a circle. Additionally, the tangent function is used in a variety of calculus applications, such as finding derivatives and integrals.