provide that 4sin¦Ðsin(60¡ã-¦Ð)sin(60 ¦Ð)=sin3¦Ð

Answer 1

If I get past the font gibberish, I sense that you want to prove that

4 sinθ sin(60-θ) sin(60θ) = sin 3θ

That isn't so, so try reposting using

sin^3 θ for cube of sinθ if that's what you mean.

Answer 2

I love this