- Can anyone verify: cos^-1(x)+cos^1(-x)=pi?

Discover Questions

Is the Denbigh Mental Asylum haunted or is all that just photoshopped nonsense, or have strange things happened there? Do cows like bulls? What's the genetic percentage of the offspring if 2 brothers marry 2 girls that are first cousins?The brothers are not related to the girls? What is the equation of the normal line to the curve 9x^3 - y^3 = 1 at point (1,2).? How many 80 lbs.of concrete do i need for a 12 x 12 x 3 inches deep.?