Доказать тождество: 1) cos(8п+a)cos(4п-a)+sin(a+6п)sin(a+4п)=1
2) sin(6п-a)cos(10п+a)tg(7п-a)ctg(12п-a)=-sin a cos a

На всякий случай фото))
Please enter comments
Please enter your name.
Please enter the correct email address.
You must agree before submitting.

Copyright © 2025 SCHOLAR.TIPS - All rights reserved.