User blog:Primexit/Math problem of the week (3)

The more armour is sloped, the thicker it be. You are in the Tiger-H tank with frontal armour of 100mm. An enemy soldier fire the RPG at you with piercing power of 180mm. The question is how many degree of slope armour you need in order to stop the RPG. Use basic trigonometry and calculator to solve the question. :1