Q24Long answer
If x = sec φ – tan φ and y = cosec φ + cot φ then show that xy + x – y + 1 = 0 [Hint: Find xy + 1 and then show that x – y = – (xy + 1)]
If x = sec φ – tan φ and y = cosec φ + cot φ then show that xy + x – y + 1 = 0 [Hint: Find xy + 1 and then show that x – y = – (xy + 1)]