Trigonometry Calculator
Your friendly guide to understanding triangles and waves. Perfect for students and professionals!
Quick Start Guide
New to trigonometry? Start here!
1. Basic Functions
Use the Basics tab to explore sin, cos, tan for any angle.
2. Triangle Problems
Go to Triangle Solver to solve missing sides/angles.
3. Visual Learning
Check Graphs and Table tabs to see patterns.
Basic Trig Functions
Enter any angle to see all trigonometric function values
Tip
Common angles: 0°, 30°, 45°, 60°, 90°. Try them to see patterns!
sin0.5
Opposite / Hypotenuse
cos0.866
Adjacent / Hypotenuse
tan0.5774
Opposite / Adjacent
csc2
1 / sin
sec1.1547
1 / cos
cot1.7321
1 / tan
Frequently Asked Questions
What's the difference between degrees and radians?
Degrees are easier for everyday use (circle = 360°), while radians are better for math and science. 180° = π radians.
How do I solve a right triangle?
You need any 2 values (sides or angles). Choose the pattern that matches what you know in the 'Right Triangle' tab.
When should I use the oblique triangle solver?
Use this for triangles that don't have a 90° angle. You'll need 3 pieces of information (sides or angles).
What do sin, cos, and tan actually mean?
In a right triangle: sin = opposite/hypotenuse, cos = adjacent/hypotenuse, tan = opposite/adjacent. Remember: SOH-CAH-TOA!