cot x can be rewritten as cos x / sin x so, sin x + cos x. cosx / sin x sin x + (cos x)^2 / sin x Then if you multiply by sin x... sin x. sin x + sinx. (cos x)^2 / sin x which becomes (sin x)^2 + (cos x)^2 I'll leave the honors to you.
Old Man River. NOTE Old Man River was a standard part of Robeson's repertoire and appears on many of his albums. It also became William Warfield's signature song. Show Boat's 1927 premiere announced the advent of a new kind of musical. For the first time, characters developed and matured.
Paul Robeson, Jules Bledsoe, Judy Garland others. Ol' Man River (music by Jerome Kern, lyrics by Oscar Hammerstein II) is a song in the 1927 musical Show Boat that contrasts the struggles and hardships of African Americans with the endless, uncaring flow of the Mississippi River.