take the cosecant of a number in rust

The cosecant function is not directly available in the Rust standard library. However, it can be calculated as the reciprocal of the sine function:

main.rs
fn cosec(x: f64) -> f64 {
    return 1.0 / x.sin();
}
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This function takes a f64 (floating-point number) as input and returns another f64 as output. It first calculates the sine of the input using the sin() method, and then returns the reciprocal of that value using the / operator and the constant 1.0.

Here's an example of how to use this function:

main.rs
fn main() {
    let x = 1.0_f64; // input value 
    let c = cosec(x); // calculate cosecant
    println!("Cosecant of {} is {}", x, c);
}
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The output should be:

main.rs
Cosecant of 1 is 1.1883951057781212
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