cosΞ±=β 5 4 β , with π 2 < πΌ < π 2 Ο β <Ξ±<Ο sin β‘ π½ = β 3 4 sinΞ²=β 4 3 β , with π < π½ < 3 π 2 Ο<Ξ²< 2 3Ο β
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.