Do things in parts

1.- v-v0 = x
2.- v1-v0 = x1
3.- x/x1 = x2
4.- sin-1(x2)

that'll be your answer. Since i'm a beginner i dunno how to do sin-1, the only thing i can tell you that

y = sin (x)

x = arcsin (y)

and yes,
x = arcsin (sin (x))

but out of there nothing to say