TRIGONOMETRIC FUNCTION SIN COS TAN B ＝ A x sin α B ＝ A x cos α B ＝ A x tan α CALCULATING PRE-HOLE DIMENSION FOR FORMING CALCULATING PRE-HOLE DIMENSION FOR FORMING OTHER CALCULATOR TONNAGE CALCULATION MAKE A SELECTION OF TOOL STATION CALCULATING PRE-HOLE DIMENSION FOR FORMING TRIGONOMETRIC FUNCTION OTHER TECHNICAL GUIDE
