cos(x)^(two thousand and twenty-one)>=cos(x)^(two thousand and twenty)
co sinus of e of (x) to the power of (2021) greater than or equal to co sinus of e of (x) to the power of (2020)
co sinus of e of (x) to the power of (two thousand and twenty minus one) greater than or equal to co sinus of e of (x) to the power of (two thousand and twenty)