(2cosalf-sinalf)/(2sinalf+cosalf), если ctgalf=-0,5
cosa/sina=-0.5 cosa=-0.5sina
(2*0.5sina-sinalf)/(2sinalf-0.5sina)=(-2sina)/(1.5sina)=-20/15=-4/3
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
cosa/sina=-0.5 cosa=-0.5sina
(2*0.5sina-sinalf)/(2sinalf-0.5sina)=(-2sina)/(1.5sina)=-20/15=-4/3