Trigonometry Calculator - Free Online | FunToolX

Enter an angle value (degrees or radians), and the tool immediately calculates and displays all trigonometric function values such as sin, cos, tan, cot, sec, csc, etc. You can switch between angle system and radian system, and support decimal and fractional input.

Unit circle visualization: Mark points corresponding to angles on the circle, showing that sin is the y coordinate, cos is the x coordinate, and tan is the tangent length. Intuitive understanding of the geometric meaning of trigonometric functions.

Calculation uses built-in functions such as Math.sin/cos/tan in JavaScript, and π/180 is used for radian angle conversion. Suitable for students to understand trigonometric functions and engineers to quickly calculate.

Trigonometric function calculator, which inputs angles to calculate trigonometric function values such as sin/cos/tan, supports switching between angles and radians, and visualizes the unit circle.