" (iii) "(sin2A+sin2B)/(sin2A-sin2B)=(tan(A+B))/(tan(A-B))

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

(sin2A + sin2B) / (sin2A-sin2B) = (tan (A + B)) / (tan (AB))

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

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

(sin A + sin B) / (sin A-sin B) = tan ((A + B) / (2)) cot ((AB) / (2))

If sin B=(sin(2A+B))/(5) then (tan(A+B))/(tan A)=?

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

If sin2A=lambda sin2B prove that ((tan(A+B))/(tan(A-B)))=(lambda+1)/(lambda-1)

Prove that (i) (sin^(2)A cos^(2)B - cos^(2)A sin^(2) B )=(sin^(2)A- sin^(2)B) (ii) (tan^(2)A sec^(2)B - sec^(2)A tan^(2)B)=(tan^(2)A- tan^(2)B)

(sin^(2)A-sin^(2)B)/(sin A cos A-sin B cos B) is equal to (a) sin A cos A-sin B cos Btan(A-B)(b)tan(A+B)cot(A-B)(d)cot(A+B)