Question

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

Answer 1

fn main() {
    let pi: f32 = (-1.0f32).acos();

    println!("{}", pi);
}
 
 

/*
run:
    
3.1415927
    
*/

 

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Answer 2

fn main() {
    let pi: f32 = 2f32 * (0.0f32).acos(); 

    println!("{}", pi);
}
 
 

/*
run:
    
3.1415927
    
*/

 

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