Question

Find the exact value of cos 11π/3

Answer 1

1/2

Answer 2

\[\cos(11×\frac{ \pi }{ 3 })\]

is it like this?

Answer 3

yes

Answer 4

cos(2pi+5pi/3)

Answer 5

OR

\[\cos(\frac{ 11\pi }{ 3 })\]

Answer 6

@SerikMB let the user understand dont just use
https://www.wolframalpha.com/input/?i=Find+the+exact+value+of+cos+11%CF%80%2F3

Answer 7

for the answer.

Answer 8

@some_someone, he said that he knows how to find, i just wondering why then just don't use a calculator. xD

Answer 9

in the previous question