## Trigonometry (11th Edition) Clone

$t = \frac{3}{4\pi}~arcsin(3y)$
$y = \frac{1}{3}sin\frac{4\pi~t}{3}$ We can solve the equation for $t$: $sin\frac{4\pi~t}{3} = 3y$ $\frac{4\pi~t}{3} = arcsin(3y)$ $t = \frac{3}{4\pi}~arcsin(3y)$