[" Prove that "],[(sin2A)/(1+cos2A)=tan A]

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

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

prove that (sin2A)/(1-cos2A)=cot A

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

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

prove that (1-cos2A)/(1+cos2A)=tan^(2)A

Prove that (1+sin2A)/(cos2A)=(cos A+sin A)/(cos A-sin A)=tan((pi)/(4)+A)

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

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))

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))