August 2022 1 10 Report
Покажите где ошибка?Дам 98 баллов
sin(x+y)=cos([tex]\frac{\pi }{2}[/tex]-(x+y) )=cos(([tex]\frac{\pi }{2}[/tex]-x )-y)=cos([tex]\frac{\pi }{2}[/tex]-x)cos(-y)+sin([tex]\frac{\pi }{2}[/tex]-x)sin(-y)=sin(x)cos(x)-cos(y)sin(y)
А должо быть:
sin(x)cos(x)+cos(y)sin(y)
Please enter comments
Please enter your name.
Please enter the correct email address.
You must agree before submitting.

Answers & Comments


Copyright © 2024 SCHOLAR.TIPS - All rights reserved.