Secant is a trigonometric function that is the ratio of the hypotenuse of a right triangle. The angle is a component, and the leg is adjacent to the angle for an acute angle. An arccos is the inverse of the cosine function. It returns the angle with a given cosine value.

## What Is A Secant Circle?

A secant is a line that passes through two points on a circle.

When two tangents or two secants cross outside of a circle, the angle formed equals one-half the positive difference between the intercepted arcs’ measurements.

When two chords cross inside a circle, the product of the measures of each chord’s segments multiplied together equals the product of the other chord.

The product of the external segment and the total length of each secant are equal if two secants are drawn to a circle from one exterior point.

When one secant and one tangent are drawn to a circle from one exterior point, the square of the tangent’s length equals the product of the external secant segment and the secant’s total length.

## Inverse Trigonometry Functions: Arccos

Arccosine, often known as cos-1, is one of the inverse trigonometric functions. Because cos-1(x) is the inverse of cos(x), the inverse function of cos x is arccosine (x). There are six inverse trigonometric functions, including:

- arcsin = inverse of sin = sin-1
- arccos = inverse of cos = cos-1
- arctan = inverse of tan = tan-1
- arccsc = inverse of csc = csc-1
- arcsec = inverse of sec = sec-1
- arccot = inverse of cot = cot-1

The cosine function is known to be a function from R [-1, 1]. However, on the domain R, the cosine function is not a bijection (because it is not one-one).

As a result, it cannot have an inverse of the domain R. The domain of the cosine function can be confined to one of the intervals [-, 0], [0,], [, 2], etc., for it to be one-one.

A branch of arccosine corresponds to each of these intervals. The major branch of arccosine is the branch with the range [0,]. As a result, cosine’s domain is usually limited to [0,], and its range is [-1, 1].

## FAQs

### How Do You Find Compound Intrest?

When compound interest is compounded annually, most students are familiar with using the formula A = P(1+r)t to calculate compound interest (once a year). When interest is compounded more regularly, though, many people struggle. As seen below, we can use a slightly altered compound interest calculation to account for compounding time changes.

- N = 12 if interest is compounded monthly.
- N = 365 if interest is compounded daily.

### How Do You Find X and Y Intercepts Of An Equation?

This formula can be used in the same way as A = P(1+r)t once n has been determined. The x and y intercepts on a graph are straightforward to find, but students frequently struggle to determine them using simply the equation. It only takes one simple trick, though:

- Substitute y = 0 and then solve x to discover an equation’s x-intercept(s).
- Substitute x = 0 and solve y to determine an equation’s y-intercept(s).

### What Is The Inverse Of Cos?

The -1 superscript following Cos denotes a Cos Inverse. When -1×1 occurs, the Cos of x is defined as the inverse cosine function of x. It’s written as Cos-1(x) = (where x is the Cos value and x is the angle).