The hyperbola x²/25 - y²/16 = 1 has foci at (±c, 0). What is c?
Question 1
Q1. The hyperbola x²/25 - y²/16 = 1 has foci at (±c, 0). What is c?
Answer: √41
Explanation: For hyperbola c² = a² + b² = 25 + 16 = 41 → c = √41.