1. Find the value of Π(from n=1 to infinity) (1 + 1/n^2).

I know that I need to use the product expansion for sin πz but i do not know what to do

2. Suppose that p is a polynomial of degree n and that |p(z)| ≤ M if |z| = 1. Show that |p(z)| ≥ M|z|^n if |z|≥ 1.

I don't know how to solve this T-T

Plz help me!!!