It is important for the citizens to have a democracy having more than one way to participate in government and politics because it only means that there are more opportunities for one's voice to be heard and have the right to choose who or what parties they wanna pursue.
Constitutional monarchy means that the parliament or the legislature makes the rules and the King of the country goes along with those rules. King James II of England refused to follow the constitutional monarchy and was kicked out through the revolution of 1688. This gave rise to constitutional monarchy in England.
Se define el radian como el ángulo que en una circunferencia subtiende respecto del centro O un arco MN con igual longitud que el radio r. 1 radian equivale a 57.30 grados