physicscatalyst.com logo




Domain, Graph and Range of Trigonometric Functions




What is Domain and Range of Trigonometric Functions?

The input and output values of trigonometric functions are the domain and range of trigonometric functions, respectively. We know that there are six trigonometric functions namely

  1. $\sin\theta$
  2. $\cos\theta$
  3. $\tan\theta$
  4. $\cot\theta$
  5. $\sec\theta$
  6. $\csc\theta$

The angle and the resultant value, respectively, define the domain and range of trigonometric functions. The trigonometric functions' domain is angles in degrees or radians, and their range is a real number.

The domain of trigonometric functions specifies the values of angles where the trigonometric functions are defined, whereas the range of trigonometric functions denotes the resultant value of the trigonometric function corresponding to a certain angle in the domain.

Domain and Range of Sine Function

  • $y=f(x)= Sin(x)$
  • Domain of Sine Function : It is defined for all real values of $x$ i.e., $(-\infty , \infty)$
  • Range of Sine Function: $-1 \leq y \leq 1$
  • Period of Sine Function: $2\pi$
  • It is a odd function

Graph of sine function

graph of sin(x) function

More Graphs on sine function for $y=f(x)=2 \sin (x)$ and $y=f(x)=3 \sin (x)$
graph of multiple of sin(x) function
We can see that range get increased in the similar way
for $y=f(x)=\sin (2x)$
graph of sin(2x) function
We can see that range remains but graph get shrink

Domain and Range of Cosine Function

  • $y=f(x)= cos(x)$
  • Domain of Cosine Function: It is defined for all real values of $x$
  • Range of Cosine Function: $-1 \leq y \leq 1$
  • Period of Cosine Function: $2\pi$
  • It is even function

Graph of cos(x) function

graph of cos(x) function

More Graphs on contains function for $y=f(x)=2 cos (x)$ and $y=f(x)=3 cos (x)$
graph of multiple of cos(x) function

We can see that range get increased in the similar way
for $y=f(x)=cos (2x)$


graph of cos(2x) function

We can see that range remains but graph get shrink.


Domain and Range of Tangent Function



Latest Articles
Synthetic Fibres and Plastics Class 8 Practice questions

Class 8 science chapter 5 extra questions and Answers

Mass Calculator

3 Fraction calculator

Garbage in Garbage out Extra Questions7