Answer:
Step-by-step explanation:
B = 42°
Complement of B = 90°-B = 48°
:::::
3x-8 = 2x+1
x = 9°
:::::
A = 71°
Supplement of A = 180°-A = 109°
:::::
x + (5x) = 180°
x = 30°
:::::
A straight angle is 180°
:::::
78 = 5x-2
x= 16°
:::::
C = 110°
Supplement of C = 180°-C = 70°
:::::
119 + m = 180
m = 61°
