`(cos x)/(1-sin x)=(1+cos x+sin x)/(1+cos x-sin x)`

(cos x)/(1-sin x)+(cos x)/(1+sin x)=2

Prove that (cos x + sin x)/(cos x - sin x) - (cos x - sin x)/(cos x + sin x) = 2 tan x

Prove that: (i) (1+"sin" 2theta-cos 2theta)/(1+"sin" 2theta+cos 2theta)="tan" theta . (ii) 2 tan 2x=(cos x+"sin" x)/(cos x-"sin" x)-(cos x-"sin" x)/(cos x+"sin" x) .

2tan2x = (cos x + sin x) / (cos x-sin x) - (cos x-sin x) / (cos x + sin x)

( cos x )/( 1 + sin x ) + ( 1 + sin x)/( cos x) is equal to:

Solve: (cos x)/(1 - sin x) + (1 - sin x)/(cos x) =

if a=(1+sin x)/(1-cos x+sin x) then (1+cos x+sin x)/(2sin x) is

int(cos x+sin x)/(cos x-sin x)(1-sin2x)dx

Solve: (cos x)/(1-sin x)+(cos x)/(1+sin x)=4

int(sin x cos x)/(1+sin x+cos x)