William Magear "boss" Tweed is a corrupt representative who defrauds millions of dollars from New Yorkers. He and his peers in the Democratic Party in New York exploit their power in the government for personal gain. As a civil reformer and a cartoonist, Thomas Nast portrays William Tweed as a vulture who preys on New Yorkers.
Cos(pi/2 - x) = sin(x). sec(x) = 1/cos(x), so the left side would be sinx/cosx = tanx. So it checks out.
Answer:
economic and educational backwardness
Explanation:
Thaddeus Stevens was representative of the State of Pennsylvania in the 1860s. A prominent Radical republican he fought for the equality of African Americans throughout his life. He led the crusade for universal education and Pennsylvania became the first state to provide free education. He not only acknowledged the economic and educational backwardness of African Americans but consistently fought to overcome them.