What are the foci of the hyperbola y²/9 - x²/16 = 1?
Question 1
Q1. What are the foci of the hyperbola y²/9 - x²/16 = 1?
Answer: (0, ±5)
Explanation: c² = a² + b² = 9 + 16 = 25 ⇒ c=5. Foci at (0, ±5).