Tangent Calculator
Calculate the tangent of any angle. Enter the angle in degrees or radians and get the result instantly.
TrigonometryFree · no sign-upStep-by-step answers
How to use this calculator
- 1Enter your values or expression in the fields above.
- 2Press Enter or click the calculate button.
- 3Read the result, then follow the numbered step-by-step working to understand each stage.
Worked Examples
Frequently Asked Questions
What is the tangent function?
tan(θ) = sin(θ) / cos(θ) = opposite / adjacent in a right triangle.
Why is tan(90°) undefined?
Because cos(90°) = 0, and division by zero is undefined.
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