📐Sin Cos Tan Calculator
Compute all six trig functions for any angle, or find the angle from a ratio using inverse trig functions.
| Exact | Decimal | |
|---|---|---|
| sin | — | — |
| cos | — | — |
| tan | — | — |
| csc | — | — |
| sec | — | — |
| cot | — | — |
Free Sin Cos Tan Calculator
Need sine, cosine, or tangent for any angle? Our free Sin Cos Tan Calculator computes all six trig functions — sin, cos, tan, csc, sec, and cot — instantly, in degrees or radians, with exact values shown for standard angles like 30°, 45°, and 60°.
Need to go the other way? Switch to inverse mode to find the angle from a sine, cosine, or tangent ratio using arcsin, arccos, or arctan, with results given correctly within each function's principal value range and in both degrees and radians.
Undefined cases (like tan at 90°) are clearly labeled instead of showing a broken number, and out-of-range inverse inputs are flagged immediately. A small unit-circle diagram shows exactly what's being calculated. No sign-up, no downloads — just enter a value and get your answer. See the About page or the FAQ for more.
About the Sin Cos Tan Calculator
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 90°+180°n and cot/csc at 0°+180°n are labeled undefined, never NaN or Infinity.
Frequently Asked Questions
What does this calculator compute?
All six trig functions (sin, cos, tan, csc, sec, cot) for any angle, plus their inverses.
Can I use degrees or radians?
Yes, toggle between them; results update instantly.
What is inverse mode?
Enter a ratio and get the angle back using arcsin, arccos, or arctan.
Why is my inverse input rejected?
Arcsin and arccos only accept values between -1 and 1; anything outside is flagged.
What happens at undefined points (like tan at 90°)?
It's clearly labeled undefined rather than showing an error or Infinity.
Does it show exact values?
Yes, for standard angles (multiples of 30°/45°/60°) exact fractional/surd forms are shown alongside decimals.
What's the principal value range for inverse functions?
arcsin/arctan give -90° to 90°; arccos gives 0° to 180° — the calculator follows this convention.
Can I enter angles greater than 360° or negative?
Yes, they're automatically reduced to the correct reference angle and quadrant.
Is it free?
Completely free, no sign-up or limits.
Does it work on mobile?
Yes, fully responsive.