Trigonometric Calculator
Trigonometric Functions
📊 Results
📐 Additional Info
📐 Common Angles Reference
| Angle | Degrees | Radians | sin | cos | tan | Action |
|---|
⭕ Unit Circle Visualization
How to Use
🎯 Basic Functions
- • Normal Functions: Calculate sin, cos, tan of an angle
- • Inverse Functions: Find angles from trigonometric ratios
- • Unit Selection: Choose between degrees and radians
- • High Precision: Adjustable decimal places for accuracy
🔢 Input Formats
- • Degrees: 30, 45, 90, 180
- • Radians: π/6, π/4, π/2, π
- • Decimals: 30.5, 1.5708
- • Fractions: 1/2, 3/4 (for inverse functions)
Frequently Asked Questions
What are trigonometric functions?
Trigonometric functions (sin, cos, tan) relate angles to ratios of sides in right triangles. They're fundamental in mathematics, physics, engineering, and many other fields.
What are inverse trigonometric functions?
Inverse functions (arcsin, arccos, arctan) find the angle when you know the trigonometric ratio. For example, if sin(x) = 0.5, then arcsin(0.5) = 30° or π/6 radians.
When should I use degrees vs radians?
Use degrees for everyday applications and when working with angles in geometry. Use radians for calculus, physics, and advanced mathematics where they provide more natural formulas.
What is the unit circle?
The unit circle is a circle with radius 1 centered at the origin. It's used to define trigonometric functions geometrically and helps visualize how sin and cos values change with angle.
Why do some angles have undefined tangent values?
Tangent is undefined when cosine equals zero (at 90°, 270°, etc.) because tan = sin/cos, and division by zero is undefined. The calculator will display "undefined" for these cases.
User Reviews
"Perfect for my calculus homework! The unit circle visualization really helps me understand the relationships between angles and trig values."
"I use this in my classroom daily. The common angles table and inverse functions make it an excellent teaching tool for trigonometry."
"Essential for game development and graphics programming. The high precision and support for both degrees and radians is exactly what I need."
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