Помогите пожалуйста! Упростите выражение ctg^2x-2cos^2xtg^2, если sin^2x=1\6.
Варианты ответов: -1\6; 3; 4 2\3; 5 1\3.
Please enter comments
Please enter your name.
Please enter the correct email address.
You must agree before submitting.

Copyright © 2024 SCHOLAR.TIPS - All rights reserved.