Answer:
m = 6
Step-by-step explanation:
(8m+4) + 38 = 90 ( since they are complementary angles )
8m + 42 = 90
8m = 90 - 42
m = 48/8
38+8m+4=90 degree(being perpendicular)
42+8m=90
8m=90-42
m=48/8
m=6
