Indian Mathematics c6.13

c6.13

In some of the Indian works of this period an interpolation formula for the construction of the table of sines is given. It may be represented by $Δ_n+1 = Δ_n - (Sin n. α)/(Sin α) Δ_n = Sin n. α - Sin (n-1)α,$ This is given ostensibly for the formation of the table, but the table actually given cannot be obtained from the formula.