How to use the trigonometric functions calculator
Compute sine, cosine and tangent of an angle in degrees. Enter angle in the field above; the sin θ, cos θ, tan θ, angle in radians are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- th — Angle (°)
Worked example
With angle = 45 °, the calculator gives sin θ ≈ 0.7071068; cos θ ≈ 0.7071068; tan θ ≈ 1; angle in radians ≈ 0.7853982 rad.
Frequently asked questions
What is the formula for the trigonometric functions calculation?
sin θ = sin(th). cos θ = cos(th). tan θ = tan(th). Angle in radians (rad) = rad(th). Here th is angle (°).
What inputs do I need for the trigonometric functions calculator?
You need angle in °. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.