 Soon afterwards, another Indian mathematician and astronomer, Aryabhata (476–550 AD), collected and expanded upon the developments of the Siddhantas in an important work called the "Aryabhatiya".The "Siddhantas" and the "Aryabhatiya" contain the earliest surviving tables of sine values and versine (1 − cosine) values, in 3.75° intervals from 0° to 90°, to an accuracy of 4 decimal places.They used the words "jya" for sine, "kojya" for cosine, "utkrama-jya" for versine, and "otkram jya" for inverse sine.