" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
zABD+zCBD =180`
(3A+20)`+2A`=180`
5A+20`=180`
5A=180` - 20`
5A=160`
A=160`÷5
A=32`
zABD= 3A + 20`
3(32`)+ 20`
96` +20`
116`
5a=180-20
. a=160/5
a=32°
= 96+20=116°