cos²a
Объяснение:
-(1-cos²a)ctg²a=sin²a*ctg²a=sin²a*cos²a/sin²a=cos²a
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
cos²a
Объяснение:
-(1-cos²a)ctg²a=sin²a*ctg²a=sin²a*cos²a/sin²a=cos²a