(sin2A)/(1-cos2A)=

(sin2A)/(1+cos 2A) is

Consider the trigonometric expression sin(2A)/(1-cos 2A) amd sin(2A)/(1+cos 2A) .(iii)Prove that (1-cos theta)/sin theta=tan (theta/2)=(sin theta)/(1+cos theta) .

Prove that , (sin2x)/(1+cos2x)=tanx

(sin2x)/(1+cos2x)=tan x

Prove that: (sin2x)/(1+cos2x)=tanx

Consider the trigonometric expression sin (2A)/(1-cos 2A) and sin(2A)/(1+cos 2A) . Of the above expressions which one is tan A and which one is cot A?

Consider the trigonometric expression sin (2A)/(1-cos 2A) and sin(2A)/(1+cos 2A) .(ii)Evaluate tan 22^@30' and cot 22^@30' .

int(sin2x)/((1-cos2x)(2-cos2x))dx=

int cot^(-1)((sin2x)/(1-cos2x)) dx = ?