Trigonometry Calculator
Calculate sine, cosine, and tangent for any angle, in degrees or radians.
Calculate
Enter your values below.
Result
sin
0
cos
0
tan
0
Formula used
Converts the angle to radians if needed, then applies the sine, cosine, and tangent functions.
Example: 45° → sin ≈ 0.7071, cos ≈ 0.7071, tan = 1.
How to use this calculator
- Enter Angle.
- Choose Angle unit.
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
What's the difference between degrees and radians?
Degrees split a circle into 360 parts; radians measure angle by arc length, with a full circle equal to 2π radians.
What if tangent is undefined?
At 90° (and its odd multiples), tangent is undefined — the calculator will note this.
Can I enter negative angles?
Yes, negative angles are fully supported.
Which unit should I use?
Use whichever matches your source material — most everyday contexts use degrees.