Question

6sin(π/12) cos(π/12) = 3(2 sin(π/12) cos(π/12) = 3sin (2) (π/12) = 3 sin (π/6) = 3 (1/2) =3/2 Why is 6 sin divided into 3sin (2) and what happens with cos (π/12)?

Answer 1

it is n't sin(2)
but its 3*sin(2*(π/12))=3*sin(π/6)

Answer 2

what about cos (π/12). Doesn't that have to be multiplied with 3 as well?