Trigonometry · free · no sign-up
Trigonometry Calculator
Calculate any of the six trigonometric functions for an angle and see it on a graph.
About the Trigonometry Calculator
Calculate any of the six trigonometric functions for an angle and see it on a graph.
How to use the Trigonometry Calculator
- Enter the Angle Value and choose the Angle Unit.
- Choose a Function: sine, cosine, tangent, cosecant, secant or cotangent.
- Press Calculate & Update Graph.
Formula and method
csc = 1 ÷ sin, sec = 1 ÷ cos and cot = 1 ÷ tan. Also sin² θ + cos² θ = 1.
| Angle | sin | cos | tan |
|---|---|---|---|
| 0° | 0 | 1 | 0 |
| 30° | 0.5 | 0.866 | 0.577 |
| 45° | 0.707 | 0.707 | 1 |
| 60° | 0.866 | 0.5 | 1.732 |
| 90° | 1 | 0 | undefined |
Tips
- Use radians in calculus.
- SOH-CAH-TOA helps you remember the right-triangle definitions.
Frequently asked questions
What does SOH-CAH-TOA mean?
Sine = Opposite ÷ Hypotenuse, Cosine = Adjacent ÷ Hypotenuse, Tangent = Opposite ÷ Adjacent.