Answer:
slope: 
Step-by-step explanation:

the linear line has a positive slope that goes up by 1 unit and right by 2 units
SLope = (2 + 2)/(2 + 2) = 4/4 = 1
Answer
1
1 + sec^2(x)sin^2(x) = sec^2(x)
This becomes
1+tan^2(x) = sec^2(x) which is an identity
You could
1 + sin^2(x)/cos^2(x) = sec^2(x)
then
cos^2(x) + sin^2(x) = cos^2(x)sec^2(x)
1 = 1
Sinx = cosb => x + b = 90 <=> b = 90 - 47 = 43o