Ответ:
Объяснение:arcsin(cos(π/9))=arcsin(cos(π/2-7π/18))=arcsin(sin7π/18)=
7π/18, 7π/18∈[-π/2;π/2], 7π/18=7·180°/18=70°.
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
Объяснение:arcsin(cos(π/9))=arcsin(cos(π/2-7π/18))=arcsin(sin7π/18)=
7π/18, 7π/18∈[-π/2;π/2], 7π/18=7·180°/18=70°.