The Trigonometer is an educational tool, which reflects the Unit circle in a tangible way;

What a Trigonometer is?

The Trigonometer is an educational tool, which reflects the Unit circle in a tangible way; it is meant to help students have a better perception of Trigonometry, through a hands-on learning process.

How to use the device?

Though the device is an educational tool, it could be used to find the trigonometric functions (sin, cos, and tan) of a given angle, as well as the reciprocal trigonometric functions (arcsin, arccos, and arctan) of a given value.

Educational benefits

The device is an educational tool and not a calculator; so, it is not meant to be used as its straight forward usage instructions imply; it has has many features, indeed, which will make the perception of Trigonometry easier and more concrete The Trigonometer is:


Finally, you have a Trigonometric circle between your hands, and Trigonometry is no more discrete.


it will save you time; instead of drawing a trigonometric circle, you can simply use the Trigonometer.​


you can easily switch between angles and numbers by simple rotating the Angle Tracking device and tilting the Sin/Cos Calculator.


you don’t need to memorize, you just need to try! The device will also guide you to remember is which quadrants the Sine, Cosine and Tangent are positive and where they are negative.


it is comparable in size to the protractor that you are currently using; you can grab it with you hand, and take it whenever you want; it will be your companion.

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