00375nam a2200157Ia 450000500170000000800410001704100120005808200130007010000120008324500310009525000080012626000230013450000150015765000300017270000150020220240823033839.0240823s9999||||xx |||||||||||||| ||und||  aENGLISH  A512.9 N2  aJha D K 2aA Textbook of Trigonometry  a3rd  c1982bS Chand & Co  aTRANSFERED  aTrigonometrybMathematics  a Sinha H C