Пошаговое объяснение:
Sin ( π - a) = Sin a = √2/2
Cos 2a = 1 - 2Sin² a = 1 - 2·2/4 = 1 - 1 = 0
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Пошаговое объяснение:
Sin ( π - a) = Sin a = √2/2
Cos 2a = 1 - 2Sin² a = 1 - 2·2/4 = 1 - 1 = 0