Cassie simplified the composed function f(x)= cot(arcsin x). Her work is shown below. In which step did Cassie make her first error?

step 1
step 2
step 3
step 4
She didn't make any errors

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?