Question

What is the value of cos(5π/3)?

Answer 1

\[
\cos(5\pi/3) = \cos(5\pi/3 - 2\pi) = \cos(5\pi/3-6\pi/3) = \cos(-\pi/3) = \cos(\pi/3)
\]

Answer 2

\[\pi/3 \cdot 180^\circ/\pi = 180^\circ/3 = 60^\circ
\]

Answer 3

Than you! @wio

Answer 4

Thank*

Answer 5

Well, I didn't give you the answer... do you know what \(\cos 60^\circ\) is?

Answer 6

It is supposed to be equilateral but I didn't draw perfect

Answer 7

it equals 1/2

Answer 8

Thank you for your help!