[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Indian Mathematics](https://indike.org/pramana/ins.science.kaye-1915) › c6.9 # Indian Mathematics c6.9 Indian Mathematics c6.9 - **Language:** English ### [c6.9](https://indike.org/pramana/ins.science.kaye-1915.c6.9) (1) π=√10 (2) Sin 30°=½, Sin 60°=√(1-¼), (3) Sin²γ=((Sin 2γ)/2)²+((1-Sin (90-2γ))/2)² - [Previous: c6.8](https://indike.org/pramana/ins.science.kaye-1915.c6.8) - [Next: c6.10](https://indike.org/pramana/ins.science.kaye-1915.c6.10) - [Up: c6](https://indike.org/pramana/ins.science.kaye-1915.c6) --- Source: [https://indike.org/pramana/ins.science.kaye-1915.c6.9](https://indike.org/pramana/ins.science.kaye-1915.c6.9) · Pramāṇa