Question

what is the exact solution of cos (17pi/6)?

Answer 1

The exact solution of cos (17π/6) is as follows:

First change the angle into degrees.

17(π/6) (180°/π) = 510°

Then we calculate the cosine of the angle above and it as follows:

cos 510° = -(√3)/2

Hope this answers the question. Have a nice day.