Sine Calculator
Compute sin(x) for any angle in degrees or radians.
Result
sin(30°)
0.50000000
In radians: 0.523599.
- Angle (deg)30.0000
- Angle (rad)0.523599
- cos0.866025
- tan0.577350
Step-by-step
- Convert: 30° × π/180 = 0.523599 rad.
- sin(0.523599) = 0.50000000.
How to use this calculator
- Enter the angle.
- Pick degrees or radians.
- Read sin, plus the matching cos/tan for reference.
About this calculator
sin(x) is the y-coordinate of the point on the unit circle at angle x. Range: [−1, 1]. Period 2π. Common values: sin(0°) = 0, sin(30°) = ½, sin(45°) = √2/2 ≈ 0.707, sin(60°) = √3/2 ≈ 0.866, sin(90°) = 1.
Frequently asked
For an angle in a right triangle, sin = opposite / hypotenuse. On the unit circle, sin = y-coordinate.
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