sin amplitude: 1 period: 2π
cos amplitude: 1 period: 2π
tan amplitude: none period: π
sec amplitude:none period: 2π
csc amplitude: none period: 2π
cot amplitude: none period: π
cos x = sin(x+π/2)
cos amplitude: 1 period: 2π
tan amplitude: none period: π
sec amplitude:none period: 2π
csc amplitude: none period: 2π
cot amplitude: none period: π
cos x = sin(x+π/2)