How to rotate a picture at a custom angle . 1. Right below the picture you will see an arc with degrees on it, similar to a compass, and an arrow at 0 degrees. 2. Tap on the arrow and drag it to ...

Finally, to find the number of square degrees in the entire sky, use the formula for the area of a sphere, 4πr2, where r = 1 radian (57.29577951°). So, the total area of the celestial sphere is ...