Find the exact value for each trigonometric function.
16. tan 135
17. csc 240°
18. sin 120°
19. cosa
20. sec
21. cot

In the film, zeke the zombie slayer versus the zombies from space, zeke slayed 140 zombies. in the sequel, zeke the zombie slayer versus the zombies from space, part 2, he slayed 5% more zombies. how many zombies were slain by zeke in the sequel?

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?