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" 3.(a) "(sin2A)/(1+cos2A)=tan A...

" 3.(a) "(sin2A)/(1+cos2A)=tan A

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Prove that (sin2A)/(1+cos2A)=tan A

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(1 + sin2A-cos2A) / (1 + sin2A + cos2A) = tan A

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

Prove that (1+sin2A)/(cos2A)=(cosA+sinA)/(cosA-sinA)=tan((pi)/(4)+A)

Prove that (1+sin2A)/(cos2A)=(cosA+sinA)/(cosA-sinA)=tan((pi)/(4)+A)

Prove that (1+sin2A)/(cos2A)=(cosA+sinA)/(cosA-sinA)=tan((pi)/(4)+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))

Prove that :(1+sin2A-cos2A)/(1+sin2A+cos2A)=tan A