📊 त्रिकोणमिति : महत्वपूर्ण सूत्र 📊 🍎 योग सूत्र ➭ Sin(A+B) = SinACosB+CosASinB ➭ Sin(A-B) = SinACosB-CosASinB ➭ Cos(A+B) = CosACosB-SinASinB ➭ Cos(A-B) = CosACosB+SinASinB 🍏 अन्तर सूत्र ➭ tan(A+B) = tanA+tanB/1-tanAtanB ➭ tan(A-B) = tanA-tanB/1+tanAtanB 🍎 C-D सूत्र ➭ SinC+SinD = 2Sin(C+D/2) Cos(C-D/2) ➭ SinC-SinD = 2Cos(C+D/2) Sin(C-D/2) ➭ CosC+CosD = 2Cos(C+D/2) Cos(C-D/2) ➭ CosC-CosD = 2Sin(C+D/2) Sin(D-C/2) ➭ CosC-CosD = -2Sin(C+D/2) Sin(C-D/2) 🍏 रूपांतरण सूत्र ➛ 2SinACosB = Sin(A+B)+Sin(A-B) ➛ 2CosASinB = Sin(A+B)-Sin(A-B) ➛ 2CosACosB = Cos(A+B)+Cos(A-B) ➛ 2SinASinB = Cos(A-B)-Cos(A+B) 🍎 द्विक कोण सूत्र ➛ Sin2A = 2SinACosA ➛ Cos2A = Cos²A-Sin²A = 2Cos²-1 = 1-2Sin²A ➛ tan2A = 2tanA/1-tan²A ➛ Sin2A = 2tanA/1+tan²A ➛ Cos2A = 1-tan²A/1+tan²A 🍏 विशिष्ट सूत्र ➛ Sin(A+B)Sin(A-B) = Sin²A-Sin²B = Cos²B-Cos²A ➛ Cos(A+B)Cos(A-B) = Cos²A-Sin²B = Cos²B-S...