The secant (sec) The secant is the reciprocal of the cosine. It is the ratio of the hypotenuse to the side adjacent to a given angle in a right triangle.

Review all six trigonometric ratios: sine, cosine, tangent, cotangent, secant, & cosecant.

Learn how to calculate the average rate of change for a function and its connection to the slope of a secant line. Grasp the concept of instantaneous rate of change and its significance in …

What is the slope of a line between two points on a curve? This is called a "secant" line.

Find the average rate of change of a function, or the slope of a secant line to the graph of the function.

Well, let's think about what happens if we take the secant line, if we're trying to find the slope of the secant line, between this point and this point, if we wanted to find the average rate of …

We're going from two to two plus h, so our change in x is equal to h. So the slope of the secant line, the slope of the secant line, a secant that intersects our graph in two points is going to be …

Learn second grade math—addition and subtraction with regrouping, place value, measurement, shapes, and more. (aligned with Common Core standards)

We know the two points that are on the secant line. It might not be obvious from how they wrote it but let's make a little table here to make that a little bit clearer.

Sal finds all six trigonometric ratios (sine, cosine, tangent, secant, cosecant, and cotangent) of an angle in a given right triangle. Created by Sal Khan.