## What is periodic function in trigonometry?

A periodic function is a function that repeats its values at regular intervals. For example, the trigonometric functions, which repeat at intervals of. radians, are periodic functions.

**What are trigonometric functions of real numbers?**

The six trigonometric functions of the real number �� are defined as follows. To summarize: Cosine and Secant functions are EVEN functions. Sine, Tangent, Cotangent, and Cosecant are ODD functions. Example 2: Use the opposite-angle identities to find/evaluate/simplify.

### Which functions are periodic functions?

The most famous periodic functions are trigonometric functions: sine, cosine, tangent, cotangent, secant, cosecant, etc. Other examples of periodic functions in nature include light waves, sound waves and phases of the moon.

**Are only trigonometric functions periodic?**

All trigonometric functions are periodic. The sine and cosine functions can take value between -1 to +1 only. So they can be used to represent a bounded motion like SHM.

## Are trigonometric functions Real functions?

In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.

**Are angles real numbers?**

Degree and radian measure are the units of measurement of an angle that we use regularly. We know that these measures can be expressed in the form of numbers which are real. Thus, the measurement of an angle in radians is the real number for any given angle.

### Why are sine and cosine functions called periodic functions?

1) Why are the sine and cosine functions called periodic functions? This means that the function values repeat for every P units on the x-axis.

**What is not a trigonometric function?**

A non-trigonometric periodic function will repeat at predictable intervals but will not be the direct result of a trigonometric function. They may be used to accurately predict values outside of the initial domain.

## What real life phenomena are periodic?

A rocking chair moving back and forth, a ringing telephone, and water dripping from a leaky faucet are all examples of periodic phenomena. That means that the phenomenon repeats itself every so often. The period is the time required to complete one cycle of the phenomenon.

**Why are trigonometric functions important?**

Trigonometry makes it possible to determine unknown angles and sides. Trigonometry is also used in music production. While conducting sound waves, the trigonometric identities sine and cosine come into play, where the basic laws of sine and cosine have to be applied.

### What is a periodic function in trigonometry?

Trigonometric functions are periodic functions A periodic function is a function, f, in which some positive value, p, exists such that f (x+p) = f (x) for all x in the domain of f, p is the smallest positive number for which f is periodic, and is referred to as the period of f.

**What is a trigonometric function?**

Trigonometric functions. Modern definitions express trigonometric functions as infinite series or as solutions of certain differential equations, allowing the extension of the arguments to the whole number line and to the complex numbers .

## What is the primitive period of the trigonometric function?

The trigonometric function are periodic functions, and their primitive period is 2π for the sine and the cosine, and π for the tangent, which is increasing in each open interval (π/2 + kπ, π/2 + (k + 1)π). At each end point of these intervals, the tangent function has a vertical asymptote.

**How many trigonometric functions have reciprocals?**

The trigonometric functions most widely used in modern mathematics are the sine, the cosine, and the tangent. Their reciprocals are respectively the cosecant, the secant, and the cotangent, which are less used. Each of these six trigonometric functions has a corresponding inverse function, and an analog among the hyperbolic functions.