по теореме косинусов
x²=16²+5²-2×5×16×cos120°=256+25+80=361
x=19
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
по теореме косинусов
x²=16²+5²-2×5×16×cos120°=256+25+80=361
x=19