trig functions

csc 0 / undefined

sec 0 / 1

cot 0 / undefined

csc π/6 / 2

sec π/6 / 2√3/3

cot π/6 / √3

csc π/4 / √2

sec π/4 / √2

cot π/4 / 1

csc π/3 / 2√3/3

sec π/3 / 2

cot π/3 / √3/3

csc π/2 / 1

sec π/2 / undefined

cot π/2 / 0

csc 2π/3 / 2√3/3

sec 2π/3 / -2

cot 2π/3 / -√3/3

csc 3π/4 / √2

sec 3π/4 / -√2

cot 3π/4 / -1

csc 5π/6 / 2

sec 5π/6 / -2√3/3

cot 5π/6 / -√3

csc π / undefined

sec π / -1

cot π / undefined

csc 7π/6 / -2

sec 7π/6 / -2√3/3

cot 7π/6 / √3

csc 5π/4 / -√2

sec 5π/4 / -√2

cot 5π/4 / 1

csc 4π/3 / -2√3/3

sec 4π/3 / -2

cot 4π/3 / √3/3

csc 3π/2 / -1

sec 3π/2 / undefined

cot 3π/2 / 0

csc 5π/3 / -2√3/3

sec 5π/3 / 2

cot 5π/3 / -√3/3

csc 7π/4 / -√2

sec 7π/4 / √2

cot 7π/4 / -1

csc 11π/6 / -2

sec 11π/6 / 2√3/3

cot 11π/6 / -√3

csc 2π / undefined

sec 2π / 1

cot 2π / undefined