The pair qualified at the Oceania Championships in Nuku'alofa in April.
18 year olds Jensen and Tatafu will compete in the men's and women's individual ranking rounds.
Tonga, Samoa and Vanuatu were officially welcomed into the Olympic Games Village in Rio de Janiero yesterday.
TASANOC Interim Secretary General-CEO, Takitoa Taumoepeau, said the team had settled in well and was looking forward to getting underway.
