About the Sin Cos Tan Calculator
Compute all six trig functions, or find an angle from a ratio using inverse trig.
What it is
This calculator computes sine, cosine, tangent, and their reciprocals (cosecant, secant, cotangent) for any angle in degrees or radians. Switch to inverse mode to go the other way โ enter a ratio and find the angle using arcsin, arccos, or arctan, correctly restricted to each function's principal value range.
Features
All six trig functions
sin, cos, tan, csc, sec, and cot computed together for any angle.
Inverse trig mode
arcsin, arccos, and arctan with correct principal-value ranges and domain validation.
Exact values
Standard angles show exact fractional/surd forms alongside decimals.
Undefined-case handling
tan/sec at 90ยฐ+180ยฐn and cot/csc at 0ยฐ+180ยฐn are labeled undefined, never NaN or Infinity.