Question

what is mean difference in trigonometry table
how to find it​

Answer 1

This part of the table is known as Mean Difference Column. Note: (i) From the table we get the sine or cosine value of any given angle correct to five decimal places. (ii) We know that the sine of any given angle is equal to that of cosine of its complementary angle [i.e., sin θ = cos (90 - θ)].