Prove that : sinx/(1 + cosx) = tanx/2

sinx/(1+cos x) = tanx/2
sinx/1+cosx=tan x/2
tan(x/2 cosx tan(x/2 sinx))
tan x 2 + cos(x) tan x 2 = sin(x)
sin(x) tan x/2 = 1 − cos(x)
prove the identity. tan(x/2)+cos(x)tan(x/2)=sin(x)
tan ^ 2 (x / 2) = 1-cosx / (1-cosx)
tanx sinx 1 cosx sin2x tan x
2 cos x + 2 sin x tan x + 2 sec x
sinx/1-cosx=cotx/2
#trigonometry #math