Using 'take cognizance of' implies deeper awareness and prudence towards a particular issue or fact. Teachers must take cognizance of students' feedback for effective teaching.
Pro Tip 2/3
Responsiveness Expected
The phrase often suggests that some response or action should follow once awareness is declared. When I take cognizance of your concerns, I will address them promptly.
Pro Tip 3/3
Neutral to Formal
The phrase is broadly usable but has a slightly formal connotation, fitting well in academic or professional contexts. The panel took cognizance of the new evidence presented.