[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Jyotihshastra: Astral and Mathematical Literature](https://indike.org/pramana/ins.science.pingree-1981) › c3.29 # Jyotihshastra: Astral and Mathematical Literature c3.29 Jyotiḥśāstra: Astral and Mathematical Literature c3.29 - **Language:** English ### [c3.29](https://indike.org/pramana/ins.science.pingree-1981.c3.29) The solutions utilized by the sūtrakāras involve the knowledge of a number of specific right-angled triangles (e.g., 3, 4, 5; 5, 12, 13; 7, 24, 25; 8, 15, 17; 12, 35, 37; and 15, 36, 39) as well as the general rule that the square on the diagonal of a rectangle (square or oblong) is equal to the sum of the squares on two sides; of the approximation - [Previous: c3.28](https://indike.org/pramana/ins.science.pingree-1981.c3.28) - [Next: c3.30](https://indike.org/pramana/ins.science.pingree-1981.c3.30) - [Up: c3](https://indike.org/pramana/ins.science.pingree-1981.c3) --- Source: [https://indike.org/pramana/ins.science.pingree-1981.c3.29](https://indike.org/pramana/ins.science.pingree-1981.c3.29) · Pramāṇa