List -1,1/4 and 1 2/3 in order from greatest to least

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Consider the triangle. which shows the order of the angles from smallest to largest? angle a, angle b, angle c angle b, angle a, angle c angle b, angle c, angle a angle c, angle a, angle b

3.4a=57.8 what is the the value of a