Trines are approximately four Signs apart by virtue of their 120 angle. As a result, we can expect the planets involved to usually be of the same Element, be it Fire, Air, Earth or Water. A trine allows for the easy flow of energy between two planets. This Aspect is generally favorable, and light and joyous in nature. Translated to the individual, trines are indicative of fun, creativity, an easy spirit, and bounteous talent.
Pleasure is the byword here, coupled with a sense of idealism and ease in doing things.
The beauty of a trine's energy is that it doesn't require much action to be activated. One is often blessed with minimal effort. The presence of trines in a horoscope also serve to balance out other less-favorable Aspects. A Grand Trine is present when three planets, all in the same element, are approximately 120 degrees from each other. This formation signals great creativity and largesse.