" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) PRAWDA
b) FAŁSZ
c) PRAWDA
2.
3.
c) 30 st.
4.
c) 10 cm.
5.
6.
5^2+x^2=13^2
x^2=169-25
x^2=144
x=12
tg alfa=5/12
cos beta=5/13ctg
alfa=12/5
(tg alfa + cos beta)ctg alfa=(5/12 +5/13)12/5=1+12/13=25/13