Trigonometry Calculator

Trigonometry – Quick Cheat Sheet

Unit conversion: 180° = π rad = 200g. deg↔rad: rad = deg × π/180, deg = rad × 180/π.
Right triangle: sin θ = O/H, cos θ = A/H, tan θ = O/A. Pythagoras: H² = A² + O².
Reciprocals: csc θ = 1/sin θ, sec θ = 1/cos θ, cot θ = 1/tan θ.
Special angles: 30° → (sin,cos,tan) = (1/2, √3/2, 1/√3); 45° → (√2/2, √2/2, 1); 60° → (√3/2, 1/2, √3).
Undefined points: tan(90°), sec(90°), cot(0°), csc(0°) are undefined.
Precision: Displayed values are numeric approximations; use exact forms for exact work.

Tips & edge cases

Angle functions operate internally in radians; unit selection handles conversion for you.
Right triangle solver requires two known values (at least one side). θ must be in (0°, 90°).
Large or tiny values may show rounding; increase precision in code via nicer() decimals.