Cot x is 1/tan x or cos x / sin x or +- sqrt cosec^2 x -1.
Original Cast Recording. Arista, 1973. Includes original hit song Day by Day sung by Robin Lamont. Sung by the original cast members David Haskell, Peggy Gordon, Robin Lamont, Gilmer McCormick, Sonia Manzano, Jeffrey Mylett, Stephen Nathan, Herbie Braha, Joanne Jonas, and Lamar Alford.
That%27ll Be The Day by Buddy Holly Songfacts. 1  Holly had been kicking around his home town in Lubbock, Texas trying to write a hit song for his small rockabilly band since he had attended an Elvis Presley gig at his High School some time in 1955.