Question

How to calculate PI value with acos() function in Swift

Answer 1

import Foundation

let pi = acos(-1.0)

print("pi = \(pi)")




/*
run:

pi = 3.141592653589793

*/

 

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Answer 2

import Foundation

let pi = 2 * acos(0.0)

print("pi = \(pi)")



/*
run:

pi = 3.141592653589793

*/

 

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