∠AOB – is central and is equal to the degree measure of the arc on which it relies.
Therefore, the degree measure of the smaller arc AB is also 40 °.
So the degree measure of the larger arc is 360 ° -40 ° = 320 °
Let x be the length of the larger arc, then we get the proportion:
40 ° – length 50
320 ° – length x
40/320 = 50 / x
x = 320 * 50/40 = 8 * 50 = 400
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.