Inverse Tan Calculator

Using the Inverse Tangent (arctan) Calculator

This guide will walk you through the steps to use the Inverse Tangent (arctan) Calculator efficiently to find the angle using the lengths of the opposite and adjacent sides of a right triangle.

Step 1: Enter the Opposite Side Length

Locate the input field labeled Opposite Side Length. Enter the length of the side of the triangle opposite to the angle you wish to calculate. Ensure that this value is a number within the range of -999999999 to 999999999, inclusive.

Step 2: Enter the Adjacent Side Length

Find the input field labeled Adjacent Side Length. Enter the length of the side adjacent to the angle you are calculating. Similar to the opposite side, this should be a valid number between -999999999 and 999999999.

Step 3: Select the Angle Unit

Look for the option labeled Angle Unit. Choose the unit in which you want the angle result: either Degrees or Radians. This selection will determine the format of the angle output.

Step 4: Calculate and Interpret the Results

• Inverse Tangent (Degrees): If you selected degrees as the angle unit, the calculator will compute the angle using the formula: (π/180) * atan(opposite/adjacent). This result is displayed to four decimal places and appended with a degree symbol.
• Inverse Tangent (Radians): If radians was your unit of choice, the calculator evaluates the angle with atan(opposite/adjacent). This value is provided to six decimal places.
• Tangent Ratio: Regardless of your chosen angle unit, the calculator also shows the tangent ratio, calculated as the division of opposite by adjacent. This ratio is displayed to six decimal places.

After completing these steps, you will have successfully used the Inverse Tangent Calculator to determine the angle in the desired unit based on the opposite and adjacent side lengths you provided.