[{"hint": "sin(45°) = opposite/8. sin(45°) ≈ 0.707.", "answer": "≈ 5.66", "question": "Find the missing side: right triangle, angle 45°, hypotenuse 8. Find opposite."}, {"hint": "Recall the common angle values or use the unit circle.", "answer": "0.5", "question": "What is cos(60°)?"}]