How do you find cot, sec, and csc ​

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

Which of these choices show a pair of equivalent expressions?

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges