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# What is Math.tan() in JavaScript? Arslan Bajwa

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.   In JavaScript, Math is a built-in object that contains different methods and properties to perform mathematical operations. It contains a tan() function, which is used to compute the tangent of a specified angle.

## Syntax

Math.tan(param);

## Parameter

• param: This is the angle for which we want to compute the tangent. Its type is Number and it is measured in radians.

Number in JavaScript is a 64-bit double-precision value which is the same as a double in C# or Java.

## Return value

• Number: It returns the tangent of the given angle stored in param. It is of Number type. Its range is:

• -1 <= result <= 1.
• NaN: The function returns NaN if param is positive or negative Infinity.

Use the following formulat to convert degrees to radians.

• Radians = Degrees x π /180

where π = 3.14159, approximately.

## Code

console.log("tan(-1) = " + Math.tan(-1));console.log("tan(0) = " + Math.tan(0));console.log("tan(1) = " + Math.tan(1));console.log("tan(∞) = " + Math.tan(Infinity));console.log("tan(-∞) = " + Math.tan(-Infinity));

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CONTRIBUTOR Arslan Bajwa

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.   Keep Exploring

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