(sin(B+A)+cos(B-A))/(sin(B-A)+cos(B+A))=

Prove the following : (sin(A+B)+cos(A-B))/(sin(A-B)+cos(A+B)) = sec2B+tan2B

sin(A+B). cos(A-B)+sin(A-B). cos(A+B)=

Show that (1+ sin A)/(cosA)+( cos B)/(1- sin B)=(2 (sin A- sin B))/(sin (A-B)+ cos A-cos B)

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

Prove that (sin(A+B)+sin(A-B))/(cos(A+B)+cos(A-B))=tanA

Statement-1 : (sin(A+B)+sin(A-B))/(cos(A+B)+cos(A-B))=tanA Statement-2 : sin(A+B)+sin(A-B)=sinA and cos(A+B)+cos(A-B)=cosA .

If A,B,C,D are four angles then sin (A-B) cos (A+B) + sin B (B-C) .cos (B+C) + sin (C-D) cos (C+D)+ sin (D-A) cos (D+A)=

(sin(A+B)+cos A-sin(A-B))/(cos(A-B)+sin A-cos(A+B))=

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