Sine Calculator

Your details

Forward mode: enter an angle, get sin(x). Inverse mode: enter a sine value (-1 to 1), get the angle.
The angle whose sine, cosine, and tangent you want.
sin(θ)Positive (above the axis)
0.5

The sine of the entered angle, always between -1 and 1.

cos(θ)0.866025
tan(θ)0.57735
Angle in degrees30
Angle in radians0.523599
Angle as pi fractionπ/6
QuadrantQuadrant 1: I (0° to 90°, sin > 0, cos > 0)
0.5
Strongly negative<-0.5Negative-0.5-0Positive0-0.5Strongly positive0.5+

sin(30.0000°) = 0.500000.

  • The cosine is 0.866025 and the tangent is 0.577350 at this angle.
  • This angle is π/6 in radian notation, an exact pi fraction.
  • Sine is bounded: sin(x) always stays between -1 and 1, peaking at 90° (pi/2) and -90° (-pi/2).
  • The function repeats every 360° (2pi), so sin(x + 360°) = sin(x) for any x.

Next stepNeed the angle from a known sine value? Switch the Mode selector to "Inverse" to use arcsin.

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