Question

सिद्ध कीजिए कि sin A/(1 + cos A) + sin A/(1 – cos A) = 2cosec A

Answer 1

Step-by-step explanation:

SinA/(1+cosA) + SinA/(1-cosA)

SinA{ (1 - CosA + 1 + CosA)/1-Cos²A}

SinA * 2 / Sin²A

2SinA/Sin²A

2/SinA = 2CosecA