### Home > PC > Chapter 10 > Lesson 10.2.2 > Problem10-89

10-89.

Express $y$ as a function of $x$ if $x = \text{arccos } t$ and $y = \text{arcsin } t$. There is a much simpler answer than $y = \text{arcsin}\left(\cos x\right)$. Try to find it.

Recall that: $\cos(\textit{x})= \sin\left( \frac{\pi}{2}-\textit{x} \right)$