take the cotangent of a number in rust

To take the cotangent of a number in Rust, you can use the cot method provided by the standard library's f64 type. Here's an example that prints the cotangent of 1.0:

main.rs
fn main() {
    let x = 1.0;
    let cot = x.cos() / x.sin();
    println!("cot({}) = {}", x, cot);
}
102 chars
6 lines

This code first computes the cosine and sine of x using the cos and sin methods of the f64 type, respectively. It then divides the cosine by the sine to compute the cotangent. Finally, it prints the result using println!.

Note that computing trigonometric functions on a computer involves approximations and rounding errors due to the finite precision of floating-point arithmetic. Therefore, the result of the cotangent computation may not be exact, and may depend on the precise implementation of the cos and sin methods by the Rust compiler.