Use the distributive property to remove the parentheses -4(-2v+2y-2)

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).