Ответ:
2sin²a*ctga/(cos²a-sin²a)=2sin²a*cosa/(sina*cos2a)=
=2sinacosa/cos2a=sin2a/cos2a=tg2a
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
2sin²a*ctga/(cos²a-sin²a)=2sin²a*cosa/(sina*cos2a)=
=2sinacosa/cos2a=sin2a/cos2a=tg2a