√3/2*сos75+1/2sin75=??? срочно нужна помощь

Question

√3/2*сos75+1/2sin75=???
срочно нужна помощь

Answer 1

√3/2Cos75 + 1/2Sin75 = Sin60Cos75 + Cos60Sin75 = Sin(60+75) =
= Sin135 = Sin(180 - 45) = Sin45 = √2/2