Summation Formula: A closed-form expression used to compute the sum of sequences, particularly those involving trigonometric functions, without recourse to term-by-term addition.

Haryana Board Class 10 Maths Syllabus: The Haryana Board of School Education (HBSE) has made the Maths course materials for Class 10 available online for the 2025–2026 school year. This is the ...

Abstract: A ROM-less direct digital frequency synthesizer employing trigonometric quadruple angle formula is present in this paper. The worse case spectral purity is better than -130 dBc. The ...

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References H. Alzer and S. Koumandos, Math. Proc. Cambridge Philos. Soc.134, 130 (2003), DOI: 10.1017/S0305004102006357. Google Scholar ...