(sin A+sin3A)/(cos A+cos3A)=tan2A

Prove that : (sinA+sin3A)/(cosA+cos3A)=tan2A

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

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

Prove that (sinA+sin3A)/(cosA+cos3A)=tan2A .

Some examples Type: 1 (1) (sin5A-sin3A)/(cos5A+cos3A)=tan A(2)(sin3x+sin x)sin x+(cos3x-cos x)cos x=0 (3) Prove that cot4x(sin5x+sin3x)=cot x(sin5x-sin3x)

Prove that (sin5A-sin3A)/(cos5A+cos3A)=tan A

Prove that: ,,(sin x+sin3x)/(cos x+cos3x)=tan2x

Prove that :(sin x+sin3x)/(cos x+cos3x)=tan2x

Prove that: (sin3A cos4A-sin Acos2A)/(sin4A sin A+cos6A cos A)=tan2A

(sinA + sin3A) / (cosA + cos3A) = tanalpha, (cosA-cos2A) / (sinA + sin2A) = tanbeta, (sinA + sin3A + sin5A + sin7A) / (cosA + cos3A + cos5A + cos7A) = tan gamma , (cosA-cos5A-cos9A + cos13A) / (sinA-sin5A + sin9A-sin13A) = tandelta, then (a) alpha = 4beta (b) gamma = 2alpha (c) gamma = delta (d) none