At what angle(s) is the cosine ratio exactly 1/2? Give a full explanation and draw and example of why

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

Abig remake 100 loaves of bread in one day how many loaves does the bakery make in 6 days