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.
The Husbands of River Song (TV story) The Husbands of River Song was the 2015 Doctor Who Christmas special. It was the show's eleventh Christmas special since its revival, and the second Christmas special starring Peter Capaldi as the Twelfth Doctor. It saw Alex Kingston return to reprise the role of River Song once more.