Trigonometry Calculator
Get sin, cos, tan and their inverses for any angle, plus a right-triangle solver from an angle and a side.
Uses angle A (the angle field above, in degrees). opp = hyp·sin A, adj = hyp·cos A.
tan(90° + k·180°) is undefined (cos = 0) and is shown as NaN/undefined. Inverse outputs use principal values: arcsin and arccos return −90°…90° and 0°…180°, arctan returns −90°…90°.
About Trigonometry Calculator
Get sin, cos, tan and their inverses for any angle, plus a right-triangle solver from an angle and a side.
Trigonometry Calculator applies the standard formula for this calculation and returns a clean, readable result — no spreadsheet setup or manual working required.
How to Use Trigonometry Calculator
- Enter your numbers in the input fields shown above.
- Choose any options (units, rounding, precision) if the tool offers them.
- The result updates automatically — no button needed.
- Copy the answer or reset the fields to start a new calculation.
Key Features
- Instant results with a clear, readable output format.
- Handles decimals, percentages and large numbers cleanly.
- Fast and private — every calculation runs on your device.
Frequently Asked Questions
What formula does Trigonometry Calculator use?
Trigonometry Calculator uses the standard, widely accepted formula for this calculation. Results are rounded only for display, so they are reliable for homework, planning and quick checks.
Is Trigonometry Calculator free to use?
Yes. Trigonometry Calculator is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. Trigonometry Calculator runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does Trigonometry Calculator work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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