Trigonometry Calculator
Compute sin/cos/tan/sec/csc/cot of an angle, or arcsin/arccos/arctan of a value.
About this calculator
The Trigonometry Calculator on NumberCals is a free, mobile-friendly tool for anyone needing to compute sin/cos/tan/sec/csc/cot of an angle, or arcsin/arccos/arctan of a value. Enter your values in the form below and the result is computed instantly — no sign-up, no installation, no waiting.
Formula used
sin θ, cos θ, tan θ (and inverses); choose degrees or radians
What you'll need
- Function
- Angle Unit
- Input value (e.g. 30)
What you'll get
- Result
Formula
sin θ, cos θ, tan θ (and inverses); choose degrees or radians
Result
Frequently Asked Questions
Why is tan(90°) undefined? +
Because cos(90°) = 0 and tan = sin/cos. Division by zero. Computers usually return a huge number; this calculator catches it.
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