Advanced Trigonometric Relations Through Nbic Functions

About the author: dr. Nisith k. Bairagi obtained his bachelor`s and masters degree in civil engineering from jadavpur university (1963), and calcutta university (1967), respectively, and completed technical teachers` traineeship from bengal engineering college (1968). He obtained ph.d. Degree in structures discipline from iit-bombay (1982), where he had joined earlier as faculty in civil engineering department (1971). Since then he was actively engaged in teaching and research in the field of shell structures, structural mechanics, concrete structures and concrete technology, for about 33 years or so, and retired (2004) as professor of civil engineering. Apart from the various institute and departmental commitments, dr. Bairagi held the prestigious inchargeship of the heavy structures laboratory as well as concrete technology laboratory of iit-bombay. Dr. Bairagi has pioneering original works to his credit on selfing and crossing, shell structures and pre-post-twisted r.c. Beams. Besides a large number of publication of papers in reputed journals in india and abroad, three phds were supervised by the author on his own concept of selfing and crossing.