Answer:
0.8
Step-by-step explanation:
I Dont know 3, 4, 5 so I am going to just use the normal formula
a^2 + b^2 = c^2
0.6^2 + b^2 = 1^2
0.36 + b^2 = 1
b^2 = 0.64
b= 0.8
Angle B is 50 degrees, subtract 40 degrees from 90 because complementary means a total of 90
It rlly is possible if u dont have the value for x or what it's equal at the end
I believe it is 42.5 although i may have added them up incorrectly