Find the tangent value for the input shown in the form. Use the result to check a triangle calculation or a trigonometric expression.
Tangent Calculator
Form
Results
tangent of α
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Table of Contents
1
What is Tangent Calculator ?
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How to Use This Calculator
- Enter or select Angle α.
- Check the unit beside each measurement. For a percentage or rate, use the scale and time period stated in the form.
- Choose Calculate, then compare the output with the formula and example below. If you change a value or option, calculate again to update the result.
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Formula Used
tan θ = opposite/adjacent = sin θ/cos θ
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Variables Explained
| Input | What it means |
|---|---|
| Angle α | The angle for the selected function, in degrees or radians as stated beside the input. |
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Worked Example
tan 45° = 1.
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Why Use This Calculator?
Use this result to check the selected function in a triangle or coordinate calculation. Check the input’s angle unit or, for an inverse function, the principal output range before using it in the next step.
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Common Mistakes
- Tangent is undefined at 90° plus multiples of 180°.
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Frequently Asked Questions
Why do degrees and radians give different answers?
They describe angles on different scales: 180° equals π radians. The input must use the scale selected in the form.
Should I round numbers before calculating?
Keep the original input precision through the calculation and round the final answer to the precision you need. Rounding an intermediate result can change later steps.
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Sources & References
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