Question

If x = secθ - cosθ, y = secⁿθ - cosⁿθ, then (dy/dx)² is equal to

(A) n²(y² + 4)/(x² + 4)

(B) n²(y² - 4)/x²

(C) n((y² - 4)/(x² - 4))

(D) (ny/x)² - 4

Answer 1

Answer is (A) n²(y² + 4)/(x² + 4)

= n²(y² + 4)/(x² + 4)