How does the ESP32 DAC cosine generator waveform look on an Oscilloscope?

The ESP32 DAC has a built-in cosine waveform generator. Even though it’s an 8-bit DAC, the waveform looks pretty clean.

For an example on how to generate this wavefrm in firmware, seeĀ How to use the ESP32 DAC sine/cosine waveform generator using Arduino / PlatformIO