Proving trigonometric identity

1/cscx-cotx - 1/cscx+cotx = 2/tanx

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

Plz a. s. a. p. the table shows the number of male and female contestants who did not win a prize. what is the probability that a randomly selected contestant won a prize, given that the contestant was female? write the probability as a percent. round to the neares tenth, if needed.

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9