Chapter 6 - Inverse Circular Functions and Trigonometric Equations - Section 6.4 Equations Involving Inverse Trigonometric Functions - 6.4 Exercises - Page 280: 43

We can see that the graph crosses the x-axis at the point $(0.866,0)$ Therefore: $y = arcsin~x - arccos~x -\frac{\pi}{6} = 0$ when $x = 0.866$

$y = arcsin~x - arccos~x -\frac{\pi}{6}$ We can see that the graph crosses the x-axis at the point $(0.866,0)$ Therefore: $y = arcsin~x - arccos~x -\frac{\pi}{6} = 0$ when $x = 0.866$