If the sides of a triangle are in Arithmetic Progression and the greatest angle exceeds the smallest by α, show that the sides are in the ratio 1 - x : 1 : 1 + x , where x = √(1 - cos α)(7 - cos α)
If the sides of a triangle are in Arithmetic Progression and the greatest angle exceeds the smallest by α, show that the sides are in the ratio 1 - x : 1 : 1 + x , where x = √(1 - cos α)(7 - cos α)