Trigonometry Calculator
Calculate trigonometric functions with unit circle reference
Unit Circle
sin cos
Results
Degrees
45°
Radians
0.785398
sin(θ)opposite/hypotenuse
0.707107cos(θ)adjacent/hypotenuse
0.707107tan(θ)opposite/adjacent
1csc(θ)1/sin = hyp/opp
1.414214sec(θ)1/cos = hyp/adj
1.414214cot(θ)1/tan = adj/opp
1Common Angle Values
| Angle | sin | cos | tan |
|---|---|---|---|
| 0° | 0 | 1 | 0 |
| 30° | 0.5 | 0.866025 | 0.57735 |
| 45° | 0.707107 | 0.707107 | 1 |
| 60° | 0.866025 | 0.5 | 1.732051 |
| 90° | 1 | 0 | 16331239353195370 |
Trigonometric Identities
sin²θ + cos²θ = 1
tan θ = sin θ / cos θ
1 + tan²θ = sec²θ
1 + cot²θ = csc²θ
sin(A + B) = sinA cosB + cosA sinB
cos(A + B) = cosA cosB - sinA sinB