Jika sinA=725\sin A=\frac{7}{25}sinA=257 dan 90°≤A≤180°90\degree\le A\le180\degree90°≤A≤180° maka tanA2=....\tan\frac{A}{2}=....tan2A=....
−7-\sqrt{7}−7
247\frac{24}{7}724
−7-7−7
−2425-\frac{24}{25}−2524
5\sqrt{5}5