Answer
Verified
483.6k+ views
Hint: Let us draw the graph of cos x, because from the graph of any trigonometric function we can directly find its period.
Complete step-by-step answer:
As we know that period means the length from one peak to the next peak or we can say that period is the length from one matching point to another of a period function.
In other words, we can also say that period is the length of one full cycle or the interval of x-values on which the cycle of the graph that’s repeated in both directions lies..
So, as we know that all trigonometric functions are periodic functions.
So, if we are asked to find the period of any function then we have to find the first period of that function.
So, from the above graph we can see that the graph starts repeating after $ 2\pi $.
So, the period of cos x is $ 2\pi $.
Hence, the correct option will be A.
Note: Whenever we come up with this type of problem where we are asked to find the period of any trigonometric function then the easiest and efficient way to find the period is by drawing the graph. We can clearly see that after how much length the graph is repeating. And that will be the period of that function.
Complete step-by-step answer:
As we know that period means the length from one peak to the next peak or we can say that period is the length from one matching point to another of a period function.
In other words, we can also say that period is the length of one full cycle or the interval of x-values on which the cycle of the graph that’s repeated in both directions lies..
So, as we know that all trigonometric functions are periodic functions.
So, if we are asked to find the period of any function then we have to find the first period of that function.
So, from the above graph we can see that the graph starts repeating after $ 2\pi $.
So, the period of cos x is $ 2\pi $.
Hence, the correct option will be A.
Note: Whenever we come up with this type of problem where we are asked to find the period of any trigonometric function then the easiest and efficient way to find the period is by drawing the graph. We can clearly see that after how much length the graph is repeating. And that will be the period of that function.
Recently Updated Pages
what is the correct chronological order of the following class 10 social science CBSE
Which of the following was not the actual cause for class 10 social science CBSE
Which of the following statements is not correct A class 10 social science CBSE
Which of the following leaders was not present in the class 10 social science CBSE
Garampani Sanctuary is located at A Diphu Assam B Gangtok class 10 social science CBSE
Which one of the following places is not covered by class 10 social science CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
How do you graph the function fx 4x class 9 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
The only snake that builds a nest is a Krait b King class 11 biology CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
In Indian rupees 1 trillion is equal to how many c class 8 maths CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Why is there a time difference of about 5 hours between class 10 social science CBSE
Which places in India experience sunrise first and class 9 social science CBSE