Trigonometry can be very difficult to get a hang of, and that's why it's so important to practice. This tool automatically generates new random triangle problems so that you can practice all of the different variations. We use a handy table to present several problems at once, and every column is a single triangle. You get some values to start with. Use those values to calculate and fill out the unknowns.

Your answers will be checked automatically and change color.

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The following triangles are all in the form of the basic 90° right triangle where side **a** is smaller than side **b** and **c** is the hypotenuse. The angle **A°** is opposite side **a** and smaller than angle **B°**.

a | 12.4 | 28.2 | 23.8 | 15.8 | |||||
---|---|---|---|---|---|---|---|---|---|

b | 47.3 | 60.4 | 46.3 | 33.1 | |||||

c | 50.2 | 43.4 | 66.6 | 61.8 | |||||

A° | 27.1 | 19.0 | 16.3 | ||||||

B° | 70.9 | 68.6 | 61.8 |