How we worked it out
Updated as you change the numbers.
- csc = 1/sin, sec = 1/cos, cot = cos/sin; tan = sin/cos.
Method and assumptions
Values are computed in double precision; tiny floating-point remainders are shown as 0 so that, for example, cos 90° is exactly 0.
Questions
What is sin 30°?
Exactly 1/2.
Sources
Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.