Shakti and Shaktiman
The common derivation of shakti and shaktiman, i.e. Female and male principle in a god implies that shakti and shaktiman are the same. Each and every god has its partner, 'betterhalf' or Shakti and without this Shakti, is sometimes viewed being without essential power. It is a not uncommon feature of Hinduism when worship of a pair rather than one personality constitutes worship of God, such is worship of Radha Krishna. Traditions worshiping Krishna, as svayam bhagavan, who is male, include reference and veneration to his Radha, who is worshiped as supreme. It's an accepted view that union of Radha and Krishna may indicate the union of Shakti with the Shaktiman, and this view exists well outside of orthodox Vaishnavism or Krishnaism. The Radha Krishna Ashta Shakthi Mandir at the Parashakthi Temple in Pontiac, Michigan, USA depicts this principle with Shri Radha Rani symbolizing Ashta (Eight) Shakthis of Shaktiman Lord Shri Krishna.
Read more about this topic: Radha Krishna