o kącie alfa wiadomo że jest kątem ostrym i cos alfa = 2/3 oblicz sin
cosα=2/3
sinα=?
sin²α+cos²α=1
sin²α+(2/3)²=1
sin²α+4/9=1
sin²α=1-4/9
sin²α=5/9
sinα=√5/3
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
cosα=2/3
sinα=?
sin²α+cos²α=1
sin²α+(2/3)²=1
sin²α+4/9=1
sin²α=1-4/9
sin²α=5/9
sinα=√5/3