Find the exact value of cos (a - b) if sin a = 3
5
and cos B =
5
13
with a in quadrant III and B in quadrant IV.
cos (a - b) = ?

Which of the following three dimensional figures has a circle as it’s base

Which is the graph of the following inequality?

1.what effect does replacing x with x−4 have on the graph for the function f(x) ? f(x)=|x−6|+2 the graph is shifted 4 units up. the graph is shifted 4 units down. the graph is shifted 4 units left. the graph is shifted 4 units right. 2.what are the coordinates of the hole in the graph of the function f(x) ? f(x)=x^2+3x−28/x+7 3.which graph represents the function?