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.

On pages 4 and 5 we find four-place logarithms of numbers, then logarithms of sums and differences (Gaussian logarithms) also to four places, then follow tables of logarithmic trigonometric ...

NCERT Solutions for CBSE class 11 Mathematics; get detailed and accurate answers to all questions of chapter 3, Trigonometric Functions.