1. P

    R-Formulae expressing

    Express 3sinA+4cos(60-A)=2 in the form asinA+bcosA=c
  2. maybeline9216

    Trigo, R-formulae

    Plase teach me how to do.thanks
  3. H

    Urgent! R-formulae! Please Help!!!!!!!!!

    I need a miracle! Can someone pls help me! I need to noe WHEN and HOW to use the R-formulae! and WHAT the R-formuale is in the first place! THANKX!