सिद्ध कीजिए कि
`(sin2A+sin2B)/(cos2A+cos2B)=tan(A+B)`.

(sin A + sin B) / (cos A + cos B) = tan ((A + B) / (2))

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

Prove that (sin A-sin B)/(cos A+ cos B) = "tan" (A-B)/2

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

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

Prove the following identities : tan^(2) A - tan^(2) B = (sin^(2) A - sin^(2) B)/ (cos^(2) A . cos^(2) B)

(cos2B-cos2A)/(sin2B+sin2A)=tan(AB)

Prove that ((sin 2A -sin 2B)/(cos2A + cos 2B))^(n) + ((cos 2A - Cos 2B)/(sin 2A + sin 2B))^(n) = 2 tan^(n) (A-B) or 0 According as n is even or n is odd.

Prove that (sin2A+sin2B)/(sin2A-sin2B)=tan(A+B)/tan(A-B)

Prove the following : tan^2A-tan^2B=(sin^2A-sin^2B)/(cos^2Acos^2B) .