Упростите выражение
[tex] \frac{cos \alpha }{1+sin \alpha } - \frac{cos \alpha }{1-sin \alpha } [/tex]
[tex] \frac{cos \alpha }{1+sin \alpha } - \frac{cos \alpha }{1-sin \alpha } [/tex]
More Questions From This User See All
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
Cosa(1-sina-1-sina)/(1-sin²a)=cosa(-2sina)/cos²a=-2sina/cosa=-2tga