Prove that `(sin A+sinB)/(cosB-cosA)=(cos A+cosB)/(sinA-sinB)`.

(sinA+sinB)/(cosA-cosB)+(cosA+cosB)/(sinA-sinB)=?

(sinA-sinB)/(cosA+cosB)+(cosA-cosB)/(sinA+sinB)=0 .

The value of (sin A+sinB)/(cos A+cos B)+(cos A-cosB)/(sinA-sinB) is……

Show that ((sinA+sinB)/(cosA+cosB))^(n) + ((cosA-cosB)/(sinA-sinB))^(n) = 2 "tan"^(n) (A+B)/2 when n is an even integer, 0, when n is an odd integer.

Prove the following identity : (sin A-sin B)/(cosA+ cosB)+ (cosA-cosB)/(sinA+sinB)=0 .

Prove that (sinA + sinB)/(cosA + cosB)= tan((A+B)/2)

Prove that following identities (sinA-sinB)/(cosA+cosB)+(cosA-cosB)/(sinA+sinB)=0

Prove that (sinA+sinB)/(cosA+cosB)=tan((A+B)/2)

Prove the following identities: tan^2A-tan^2B=(cos^2B-cos^2A)/(cos^2Bcos^2A)=(sin^2A-sin^2B)/(cos^2Acos^2B) (sinA-sinB)/(cosA+cosB)+(cosA-cosB)/(sinA+sinB)=0

(sinA-sinB)/(cosA+cosB) is equal to