The typical computer algebra system (https://en.wikipedia.org/wiki/Computer_algebra_system https://en.wikipedia.org/wiki/Computer_algebra_system) implements tri

The typical computer algebra system (https://en.wikipedia.org/wiki/Computer_algebra_system https://en.wikipedia.org/wiki/Computer_algebra_system) implements trigonometric functions just fine (with varying levels of sophistication) They can be implemented, but what you cannot always do is compute their values in a finite number.