In the ambiguous case if b (side ) and A (angle) are given and c1 and c2 are two possible values for the third side , prove that
(c1-c2)^2 + ((c1+c2)^2)(tanA)^2 = 4a^2
In the ambiguous case if b (side ) and A (angle) are given and c1 and c2 are two possible values for the third side , prove that
(c1-c2)^2 + ((c1+c2)^2)(tanA)^2 = 4a^2