Find the value of : `arc sin (1/2) + arc cos (1/2)` - YouTube
arcsin(x) | inverse sine function
Evaluate the integral by reversing the order of integration. \int_0^1 \int_{\arcsin (y) \cos x} ^{\pi /2} \frac{\cos (x)}{\sqrt{25 + \cos^2 (x)}} \ dx dy | Homework.Study.com
How to work out the value in terms of pi of arcsin (-1/2) without using a calculator - Quora