## What is a secant line in calculus?

A secant line is a straight line joining two points on a function.

The tangent line represents the instantaneous rate of change of the function at that one point.

The slope of the tangent line at a point on the function is equal to the derivative of the function at the same point (See below.)

## How do you find the secant slope?

Slope of a secant line example 1 | Taking derivatives | Differential

## How do you find tangent and secant lines?

How to find x for a secant and a tangent line of a circle –

## How do you draw a secant line on a graph?

We can select another nearby point on the graph by choosing a (small) value of h. This nearby point has coordinates (a+h,f(a+h)). The line joining these two points is a secant line to the graph of f. The slope of a secant line is a difference quotient!!

## Why is it called secant line?

The word secant comes from the Latin word secare, meaning to cut. In the case of a circle, a secant will intersect the circle in exactly two points and a chord is the line segment determined by these two points, that is the interval on a secant whose endpoints are these points.

## What is a tangent line to a curve?

In geometry, the tangent line (or simply tangent) to a plane curve at a given point is the straight line that “just touches” the curve at that point. Leibniz defined it as the line through a pair of infinitely close points on the curve. The word “tangent” comes from the Latin tangere, “to touch”.

## How do you find the Y intercept?

To find the y intercept using the equation of the line, plug in 0 for the x variable and solve for y. If the equation is written in the slope-intercept form, plug in the slope and the x and y coordinates for a point on the line to solve for y.

## What is a secant of a circle?

In geometry, a secant of a curve is a line that intersects the curve in at least two (distinct) points. In the case of a circle, a secant will intersect the circle in exactly two points and a chord is the line segment determined by these two points, that is the interval on a secant whose endpoints are these points.

## What is Secant equal to?

The secant of x is 1 divided by the cosine of x: sec x = 1 cos x , and the cosecant of x is defined to be 1 divided by the sine of x: csc x = 1 sin x .