Question

prove that sin20sin40sin60sin80=3/16

Answer 1

sin@sin(60-@)sin(60+@) = 1/4sin3@

Answer 2

DEAR STUDENT,


Kindly check the attached papers for a detailed solution along with step by step elaboration to reach our final solution that is our final desired or required answer to this query that is completely proved.


$\boxed{\bf{\underline{L.H.S. = R.H.S.}}}$


Which is the required proof or solution process for this type of query.


Hope this helps you and solves your doubts for applying trigonometric identifies to reach a proper solution or a proof!!!!!