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Faraz Karim

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

The ** Acos function** in the Go programming language is used to find the inverse of the cosine value of a number:

`Acos`

stands forarccosine, the actual name for the inverse of the cos value for any number.

To use this function, you must import the `math`

package in your file and access the `Acos`

function within it using the `.`

notation (`math.Acos`

). Here, `Acos`

is the actual function, while `math`

is the Go package that stores the definition of this function.

The definition of the `Acos`

function inside the `math`

package is:

The `Acos`

function takes a single argument of type float64. This argument represents the angle whose cos inverse value you want to find. This value can range from -1 to 1 (both inclusive).

The `Acos`

function returns a single value of type float64. This value represents the cos inverse value of the argument and is in radians.

The following is a simple example in which we find out the cos inverse value (in radians) of 0.25:

package mainimport ("fmt""math")func main() {x := 0.25y := math.Acos(x)fmt.Print(y)}

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Faraz Karim

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Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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