[{"title": "Finding a Side", "content": "In a right triangle with angle 30° and hypotenuse 10, find the opposite side. sin(30°) = opposite/10, so opposite = 10 × sin(30°) = 10 × 0.5.", "solution": "opposite = 5"}, {"title": "Finding an Angle", "content": "A right triangle has opposite side 4 and adjacent side 3. Find angle θ. tan(θ) = 4/3 ≈ 1.333. θ = arctan(1.333).", "solution": "θ ≈ 53.1°"}]