Question

If sinα, sin²α, 1, sin⁴α and sin⁵α are in A.P, where –π < α < π, then α lies in the interval

(a) \((\frac{-\pi}2, \frac\pi2)\)

(b) \((\frac{-\pi}3, \frac\pi3)\)

(c) \((\frac{-\pi}6, \frac\pi6)\)

(d) None of these

Answer 1

Correct option is (d) None of these