Trigonometry Calculator
Compute sine, cosine, tangent, their reciprocals, and inverse trig functions for any angle.
Primary & reciprocal functions
- sin
- 0.707107
- cos
- 0.707107
- tan
- 1
- csc (1/sin)
- 1.414214
- sec (1/cos)
- 1.414214
- cot (1/tan)
- 1
Inverse functions (result in Degrees)
- asin(angle)
- undefined
- acos(angle)
- undefined
- atan(angle)
- 88.72697
Enter an angle in degrees or radians to get sine, cosine, tangent, and their reciprocal functions (cosecant, secant, cotangent) instantly. Inverse trig values are also shown, all computed in your browser.
How to use
- Enter an angle value.
- Choose degrees or radians as the unit.
- Read the primary, reciprocal, and inverse trig results below.
Frequently asked questions
- What's the difference between sin and csc?
- Cosecant (csc) is the reciprocal of sine: csc(x) = 1 / sin(x).
- Why is a result 'undefined'?
- Reciprocal functions are undefined when the corresponding primary function equals zero (division by zero).
- Can I switch between degrees and radians?
- Yes, use the unit selector — all results update immediately.