Simplify the expression cos^2(x/2-2)/ sqrt 1 - sin^2 (x)
a) tan(x)
b) cos(x) tan(x)
c) cos(x) cot(x)
d) sin(x) tan(x)

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

Determine which postulate or theorem can be used to prove that lmn =nmo

Find the maximum value of p= 4x + 5y subject to the following constraints :