" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
sin²α+cos²α=1 zakladam ze α<90
cosα=√(1-sin²α)=√(25/25-16/25)=√(9/25)=3/5
tgα=sinα/cosα=4/3
ctgα=1/tgα=3/4