00241nam a2200109Ia 4500082001700000100001600017245001700033250001200050260003600062650001700098700001600115  a516.24 MIT/T  aMittal, S C 0aTrigonometry  a7TH ED.  bPragati PrakashanaMeerutc1990  aTrigonometry  aSharma, J N