**Sin 2pi 3**

What is 1 (sin 2pi / 3)?

Please help me

Let us be 1 (sin (2Â € / 3) = y

Then kos y = sin (2 € / 3)

Case y = ÂˆÂš3 / 2

y = € / 6

sin (2pi / 3) = sin (pi / 3) (from sinx graph)

= Because (pi / 6) (think of the right triangle)

Then kas 1 (sin (2pi / 3)) = kos 1 (kos (pi / 6)) = pi / 6.

However, since cosine also has other values, it can be pi / 6 or one of these two values + / 2pi.

Finally you have PI / 6