Which of the following explains why Cosine 60 degrees = sine 30 degrees using the unit circle?

Which of the following graphs represents the function f(x) = 2^x

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?