Question

пожалуйстаааааа............10класс

Answer 1

1) 2tg²2(π - 1) * Ctg²2(π + 1) = 2tg²(2π - 2)* Ctg²(2π + 2) = 2tg²2 * Ctg²2 =  2 * 1 = 2

2) Sin²2(π + 1) + Cos²2(π - 1) = Sin²(2π + 2) + Cos²(2π - 2)= Sin²2 + Cos²(- 2) = Sin²2 + Cos²2 = 1