" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
180= 89+4x
91=4x
x = 22,75
bca = 3x+4
bca = 3 . 22,75 + 4
bca = 72,25
2. 180 = x+6x-2+4x-8
180=11x-10
190=11x
x= 17,2
bca = 6x-2
bca=6 . 17,2 - 2
bca = 101,2
maaf kalo salah
80 derajat + ( x + 5 ) + (3x + 4) = 180 derajat
80 + x + 5 + 3x + 4 = 180
80 + 5 + 4 + x + 3x = 180
89 + 4x = 180
4x = 180 - 89
4x = 91
x = 91/4
x = 25,25 derajat
di substitusikan ke persamaan 3x + 4
= 3 (25,25) + 4
= 75,75 + 4
= 79,75 derajat
jadi besar sudut BCA adalah 79,75