Cos^2(x+pi/2)(1/sin^2(x-3pi/2)-1 (tg^2(x-pi/2)+1)/ctg^2(x+3pi/2)+1 - вопрос №1246460922123212212321 от koc12 04.04.2021 14:26

Question

Математика: Cos^2(x+pi/2)(1/sin^2(x-3pi/2)-1 (tg^2(x-pi/2)+1)/ctg^2(x+3pi/2)+1 нужно у

koc12 · Answer

(сos²(x+π/2)(1/(sin²(x-3π/2)-1)(tg²(x-π/2)+1)))/(ctg²(x+3π/2)+1)=(sin²x*(1/cos²x-1)*(ctg²x+1))/(tg²x+1)=(sin²x*(tg²x)*(1/sin²x))/(1/cos²x)=sin²x*(tg²x*ctg²x)=sin²x...