Tan Calculator
Angle (degrees)
The tangent function (tan) is the ratio of the opposite side to the adjacent side, equivalent to sin(θ)/cos(θ). Tangent represents the slope of the line from the origin to a point on the unit circle.
- 1tan(θ) = opposite / adjacent = sin(θ) / cos(θ)
- 2Undefined at 90° and 270° (where cos = 0)
- 3tan(45°) = 1 (slope of a 45° line)
- 4Period of tangent is 180° (π radians)
tan(45°)=1Equal opposite and adjacent sides
tan(30°)=0.57741/√3
tan(89°)=57.29Approaches infinity at 90°
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