" (i) "(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))=tan A

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

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

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

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

Standard Formula sin(A+B) || sin(A–B) || cos(A+B) || cos(A–B)

Prove that: i) sin(A+B)cos(A-B)-cos(A+B)sin(A-B)=sin2B ii) cos(45^(@)-A)cos(45^(@)-B)-sin(45^(@)-A)sin(45^(@)-B)=sin(A+B)

Prove that: i) sin(A+B)cos(A-B)-cos(A+B)sin(A-B)=sin2B ii) cos(45^(@)-A)cos(45^(@)-B)-sin(45^(@)-A)sin(45^(@)-B)=sin(A+B)

If A + B = 90^(@) , prove that sqrt((tan A tan B + tan A cot B)/(sin A sec B ) - (sin^(2) B)/(cos^(2)A)) = tan A .

If A+B=90^(0), prove that sqrt((tan A tan B+tan A cot B)/(sin A sec B)-(sin^(2)B)/(cos^(2)A))=tan A