The purpose of this question is to briefly explain the difference between a trim tab and a geared (servo) tab.
1. A ❌ can be controlled from the flight deck, and its purpose is to create an aerodynamic force that keeps the flight control in a deflected position.
2. A ❌ is a small hinged device installed on an aircraft control surface to assist the movement of the control surfaces by moving in the direction opposite to the desired movement of the control surface, deflecting airflow, generating force on the whole control surface in the desired direction.
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