Trigonometry calculator
Every trig value here comes from a fixed-point series with the argument reduced by octant, so it is right to far more digits than a float can hold.
Sine
0.5
- Cosine
- 0.866 025 403 784 438 646 76
- Tangent
- 0.577 350 269 189 625 764 51
- Cosecant
- 2
- Secant
- 1.154 700 538 379 25
- Cotangent
- 1.732 050 807 568 88
- Angle in radians
- 0.523 598 775 598 298 873 08
Show the working
- Angle = 30
- Angle in radians = rad(30) = 0.523 599
- Sine = sin(0.523 599) = 0.5
- Cosine = cos(0.523 599) = 0.866 025
- Tangent = cos(0.523 599) != 0 ? sin(0.523 599)/cos(0.523 599) : 0 = 0.577 35
- Cosecant = 0.5 != 0 ? 1/0.5 : 0 = 2
- Secant = 0.866 025 != 0 ? 1/0.866 025 : 0 = 1.1547
- Cotangent = 0.577 35 != 0 ? 1/0.577 35 : 0 = 1.732 05
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- csc = 1/sin, sec = 1/cos, cot = 1/tan
Enter the angle in degrees, radians, gradians or turns using the selector; the conversion is exact before the trigonometry starts.