# How Do You Calculate the Functions of Trigonometry With the Use of Unit Circle?

Trigonometry is one of the subjects of mathematics. It deals with detailed functions of angles, their applications to evaluations. An angle has six functions that are usually used in trigonometric calculations.

## Let’s have a look at some of the applications:

1. The study and creation of maps called cartography use trigonometry.

2. The Applications of trigonometry are used in various satellite arrangements.

3. Aviation industries also make use of it in their field.

4. These functions are also used for describing light and sound waves.

Trigonometry ratios are defined as the ratios that help us find missing angles and sides of a triangle. They are mostly used in triangles that have one angle as ninety degrees, called right-angle triangles.

## Unit Circle

The unit circle is a circle that has a radius of 1. Particularly in trigonometry, the circle that has a radius which is one centered from where it originates is known as a unit circle.

The inner side of the unit circle is known as the open disk unit whereas the inner side of the unit circle in combination with the unit circle itself is known as the closed disk unit.

Now let’s see what is a graph of the interactive unit circle of the functions of trigonometry?

These interactivities take an observation of the graphs of the functions of trigonometry like sin, cos, tan, etc. The points are moved about the circle and actual values are derived.

The interactive unit circle joins the functions of trigonometry and the unit circle together. The unit circle is essentially denoted as a circle of one radius that suspends in a precise quadrant of the system of coordinates. A unit circle’s radius is considered as a point anywhere on the perimeter of a circle. A right-angled triangle is formed with that.

## Unit circle mostly consists of three functions, mentioned as follows:

• Sine
• Tangent
• Cosine

The collaboration between the correlating functions and the unit circle is mentioned as interactive unit circles.

### 1. Trigonometric Function – Sine

The second and basic function of trigonometry is Sine, represented by the symbol θ. In the terminology of maths, sine is calculated when you divide the perpendicular on the right-angle triangle with its hypotenuse. Hence using this relation any angle of any structure can be calculated.

Formula for sine = perpendicular/hypotenuse

• Cosecant: This is referred to as the reciprocal of sine. It is calculated by reciprocating sine or by dividing it by 1. Hereafter, Cosecant = 1/sin.

### 2. Trigonometric Function – Cosine

In a triangle that has right angles, the ratio between base and hypotenuse of the triangle is known as cosine, it is one of the most crucial functions of trigonometry. It is derived by dividing the hypotenuse of a right-angle triangle with its base.

Formula for Cosine = Base/Hypotenuse

• Secant: Some triangles also use secant, the reciprocal of cosine. The use of secant is made in various numerical calculations. The calculation is done when you reciprocate cosine. Therefore, Secant = 1/cosine.

### 3. Trigonometric Function – Tangent

The third and basic function is known as a tangent. With the values of sine and cosine, you can also evaluate tangents in a right-angle triangle. In the right triangle, the base is divided with a perpendicular triangle, and the value of the tangent is easily obtained.

The formula for Tangent = Perpendicular/Base.

• Cot: The cot is derived when you reciprocate the tangent. Therefore, the equation of mathematics is Cot = 1/Tangent.

Thus, with the help of the graph of the unit circle that is interactive, it is easy to understand the functions and equations of trigonometry.

Trigonometry has a very vast syllabus, having an in-depth knowledge of the subject is very important for answering the questions in the examination. You need to practice several problems and solve examples to get your basics right. Cuemath is the right choice for you. Each and every detail is explained very clearly, which helps you get rid of all your doubts. You have to take out time for solving all the worksheets that they provide.

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