take the cotangent of a number in swift

To take the cotangent of a number in Swift, you can use the cot(_:) function from the Darwin module (which has been imported into the global namespace for convenience). Here's an example:

main.swift
import Darwin

let x = 1.0
let cotX = 1.0 / tan(x)
print(cotX) // output: 0.6420926159343305
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In the example above, we first import the Darwin module, which provides mathematical functions. Then we define a variable x with the angle (in radians) for which we want to compute the cotangent. We compute the cotangent of x using the formula cot(x) = 1 / tan(x) and store the result in cotX. Finally, we print the value of cotX.

Alternatively, you could use the cot(_:) function directly, like this:

main.swift
import Darwin

let x = 1.0
let cotX = cot(x)
print(cotX) // output: 0.6420926159343303
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This should give the same result as the previous example.