Prove that `(1-cos2A+sin2A)/(1+cos2A+sin2A)=tanA`

Prove that: (sin2A)/(1+cos2A)=tanA

Prove that ( sin 2 A )/( 1 - cos 2 A) = cot A

prove that (sin2A)/(1-cos2A)=cotA

i) Prove that: (1-sin2A)/(1+sin2A) = tan^(2)(pi/4-A) ii) If costheta=1/2(x+1/x) , then prove that: cos2theta=1/2(x^(2)+1/x^(2)) and cos3theta=1/2(x^(3)+1/x^(3))

Prove that: (sin5A-sin3A)/(cos5A+cos3A)=tanA (2) (sinA+sin3A)/(cosA+cos3A)=tan2A

Prove that: (sin5A-sin3A)/(cos5A+cos3A)=tanA (sinA-sin3A)/(cosA+cos3A)=tanA

(1+sin2A-cos2A)/(1+sin2A+cos2A)=tanA

Prove that : (1+sin 2A-cos 2A)/(1+sin 2A+cos 2A) = tan A

Prove that (cos^(2)A-sin^(2)B)+1-cos^(2)C

Prove that (cos A )/( 1 - sin A ) = tan (45 ^(@) + (A)/(2)),