how did the clivil war effect PEPOLE and ONLY PEPOLE in the south hurr. brainlest promised

The Civil War affected the mentality of people who lived in the south as well as the economy.

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.