Question

sin2A/(1+cos2A).cosA/(1+cosA)=tanA/2​

Answer 1

Answer:

Step-by-step explanation:

sin  

2

αcos  

2

β+cos  

2

αsin  

2

β+sin  

2

αsin  

2

β+cos  

2

αcos  

2

β=?

=(sin  

2

αcos  

2

β+sin  

2

αsin  

2

β)+(cos  

2

αsin  

2

β+cos  

2

αcos  

2

β)

=sin  

2

α(cos  

2

αsin  

2

β)+cos  

2

α(sin  

2

αcos  

2

β)=(sin  

2

α+cos  

2

α)=   5