Angle Calculator
Calculate angles using trigonometric functions, complementary and supplementary angles, and convert between degrees and radians.
Published by:
isCalculator Editorial Team
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How to use this tool?
Follow these steps to use the Angle Calculator:
- Enter an angle in degrees into the "Angle (degrees)" field. You can use decimal numbers (e.g., 45.5) or whole numbers.
- Click the "Calculate" button or press the Enter key on your keyboard.
- View the results:
- Trigonometric Values: sin, cos, and tan of your angle (rounded to 4 decimal places). If tan is undefined (e.g., for 90°), it shows "Undefined".
- Relations: Complement (90° minus your angle), Supplement (180° minus your angle), and the angle in Radians.
- If you enter an invalid value (like text or leave it blank), an error message will appear. Correct the input and try again.
All calculations use standard mathematical formulas: radians = degrees × π/180; sin, cos, tan via JavaScript Math functions.
Previous Results
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Frequently Asked Questions
Enter an angle in degrees in the input field and click 'Calculate'. The calculator will display the trigonometric values (sin, cos, tan), the complementary and supplementary angles, and the radian equivalent.
The calculator will show an error message below the input. Please enter a valid number.
Trigonometric functions use JavaScript's Math.sin, Math.cos, Math.tan. Complement = 90° - angle, Supplement = 180° - angle, Radians = degrees × π/180.
