Arctan Calculator

How to Calculate or Solve Arctan (Inverse Tangent)

Arctan, written as tan^-1(x) or arctan(x), is the inverse of the tangent function. It returns the angle whose tangent is a given number.

Formula:

This function gives you the angle θ such that the tangent of that angle equals the number x.

Steps to Solve Arctan:

1. Input any real number value (positive or negative).
2. Use a calculator to find the arctangent of the number.
3. The result is given in radians. Multiply by (180 / π) to convert to degrees.

Example:

To calculate arctan(1):

Key Notes:

• The range of arctan(x) is from −π/2 to π/2 radians (or −90° to 90°).
• It accepts any real number as input (unlike arccos/arcsin).
• It’s useful in right triangle trigonometry and calculus.