Select all angle measures for which cos0=1/2

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Plz. yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?

The acceleration of an object due to gravity is 32 feet per second squared. what is acceleration due to gravity in inches per second squared?