There are a few characters “constants” in R, such as the 26 element character vectors: letters, LETTERS, as well as 12 months in your locale: month.abb, and month.name and the Greek letters (lowercase and uppercase).
What is Pi in Mathematics
The pi, which is written as the Greek letter for p or π, is the ratio of the circumference of any circle to the diameter of that circle.
The circumference of a circle is equal to pi times the diameter (c = πd).
The pi is an irrational number, meaning that its decimal form neither ends (like 1/4 = 0.25) nor becomes repetitive (like 1/6 = 0.166666…).
A pi is an irrational number that’s crucial to many mathematical formulas.
Pi in R
Pi is an inbuilt R constant whose value is 3.141593. The pi constant is a ratio of the circumference of a circle to its diameter. When you define a pi, please note that p of pi is in lowercase.
Syntax
pi
Example
print(pi)
Output
[1] 3.141593
The value of the pi constant in R is 3.141593.
Calculate the exponential value of pi in R
To calculate the exponential value of pi in R, use the exp() function.
[1] 23.14069
Output
[1] 23.14069
Calculate the cos value of pi
To calculate the cosine value of pi in R, use the cos() function.
cos(pi)
Output
[1] -1
Find sine value of pi.
To find the sine value of pi in R, use the sin() function.
sin(pi)
Output
[1] 1.224647e-16
Find the tangent of pi in R
To calculate the tangent of pi in R, use the tan() function.
tan(pi)
Output
[1] -1.224647e-16
Compute the arccos value of pi
To calculate the arccos value of pi in R, use the acos() function.
acos(pi)
Output
[1] NaN
Warning message:
In acos(pi) : NaNs produced
It returns NaN value.
Compute the arcsin value of pi
To calculate the arccos value of pi in R, use the asin() function.
asin(pi)
Output
[1] NaN
Warning message:
In asin(pi) : NaNs produced
It returns NaN too.
Compute the arctan value of pi
To calculate the arccos value of pi in R, use the atan() function.
atan(pi)
Output
[1] 1.262627
sinpi() in R
The sinpi() function in R is used to compute the sine value of the input, which is the multiples of pi.
Syntax
sinpi(x)
Parameters
The sinpi() function takes x as a numeric value, array, or vector.
Example
sinpi(0.75)
sinpi(0.5)
sinpi(1)
Output
[1] 0.7071068
[1] 1
[1] 0
Example 2
sinpi(1 / 4)
sinpi(1 / 5)
sinpi(2 / 5)
Output
[1] 0.7071068
[1] 0.5877853
[1] 0.9510565
That is it for universal constant pi in R.