Sine Calculator
Calculate the sine of an angle in degrees, radians or gradians. Precise result with up to 10 significant digits.
What is Sine?
The sine of an angle θ in a right triangle is the ratio of the opposite side to the hypotenuse: sin(θ) = opposite / hypotenuse. Sine values always range between −1 and 1.
Notable values: sin(0°) = 0, sin(30°) = 0.5, sin(45°) ≈ 0.7071, sin(60°) ≈ 0.8660, sin(90°) = 1.
Unit conversions: 1° = π/180 rad ≈ 0.01745 rad. 1 rad = 180°/π ≈ 57.296°. 400 gradians = 360°.
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