00306nam a2200133Ia 4500008004100000100003900041245001700080250001200097260001500109300000800124650001600132942000700148999001700155190216s9999||||xx |||||||||||||| ||und||  aRaisinghania. Md  And Aggarwal R.S 0aTrigonometry  a2nd Ed.  bNullc1985  a144  aMathematics  cBK  c30999d30999