Предмет: Алгебра, автор: jsjsjsjdhdjjdjdjdjd

универсальная тригонометрическая подстановка sin П/2 Помогите пожалуйста​.​

Ответы

Автор ответа: MP41
0

Ответ:

sin(П/2)=2tg(pi/4)/(1+tg^2(pi/4))=2*1/(1+1^2)=2/2=1

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