Tangent Calculator
Calculate the tangent of an angle
About this calculator
A tangent calculator computes the tangent ratio of any given angle, which is essential for trigonometric calculations in mathematics, physics, and engineering. The tangent function represents the ratio of the opposite side to the adjacent side in a right triangle. This tool is invaluable for students, professionals, and anyone working with angles, slopes, or periodic functions, providing accurate results for both degree and radian measurements.
How to use
Enter your angle value in the input field, then select whether your angle is measured in degrees or radians using the unit selector. Click the calculate button to instantly get the tangent value. The result will display the precise tangent ratio for your specified angle.
Frequently asked questions
What is the tangent of 45 degrees?
The tangent of 45 degrees equals 1, since in a 45-45-90 triangle, the opposite and adjacent sides are equal in length.
Can I calculate tangent for angles greater than 90 degrees?
Yes, the tangent function works for all angles. However, it's undefined at 90° and 270° (or π/2 and 3π/2 radians).
What's the difference between degrees and radians?
Degrees divide a circle into 360 parts, while radians use the radius length. One complete circle equals 360° or 2π radians.