Даю 50 баллов за правильный ответ !Помогите с тригонометрия ! Докажи уравнения :[tex]sin^4 \alpha +cos^4 \alpha -sin^6 \alpha -cos^6 \alpha =sin^2 \alpha cos^2 \alpha [/tex]
More Questions From This User See All
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
.......................................=sin⁴α (1-sin²α )+ cos⁴α( 1-cos²α) =sin⁴α*cos²α +cos⁴α*sin²α =
=sin²α*cos²α (sin²α +cos²α) =sin²α*cos²α *1 =sin²α*cos²α