Step 1: Additive Color Fundamentals.
- The additive color model, utilized in light, displays, and projectors, comprises the primary colors: Red, Green, and Blue (RGB).
- Mixing any two primary colors results in a secondary color.
Step 2: Secondary Color Generation.
- Red combined with Green yields Yellow.
- Red combined with Blue yields Magenta.
- Green combined with Blue yields Cyan.
Step 3: The Secondary Color Trio.
Consequently, the three secondary colors are Cyan, Magenta, and Yellow. \[\boxed{\text{Cyan, Magenta, Yellow}}\]