9 cos? 0 – 1= 0
It has four answers and I could only get two all are in degrees

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.