evaluate-P-n-a-sin-a-sin-2-a-sin-2-2-a-sin-2-n-with-a-1-

Question Number 191229 by mr W last updated on 22/Apr/23

e v a l u a t e

P_{n} = (a + \sin θ) (a + \sin \frac{θ}{2}) (a + \sin \frac{θ}{2^{2}}) \dots (a + \sin \frac{θ}{2^{n}})

w i t h ∣ a ∣⩽ 1