" 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
sin²α+(3/5)²=1
sin²α=1-9/25
sin²α=16/25
sinα=4/5 bo α∈(0°;90°)
tgα=sinα/cosα
tgα=(4/5) / (3/5)=4/5 * 5/3=4/3 ==>α=53°