I'm not sure but I think it's 40 water stations...
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
Answer:
1073
Step-by-step explanation:
it's simple addition
Seven times 41 = 287
Therefore, the mean is 287