That one is an absolute I can’t see the other ones
You have to add the mass of the superhero book and the dragon book 200+310=510
Use a calculator it’s 117
The length of segments ab is 24
<span>hmmm: g maps x onto 3-2sin(x) for all x from 0 to A degrees
g(x) = 3-2sin(x)
the inverse would have to be arcsin (3-x)/2, which only has a radian output between -pi and pi i believe. but this is just from memory</span>