A. true b. false: the math function, atan(x), returns one tangent of x in radians.

The first thing we are going to do in this case is to rewrite the question correctly.
 We have then: "the math function, atan (x), returns one / tangent of x in radians."
 Mathematically the function can be rewritten as:
 atan (x) = tan ^ -1 (x)
 atan (x) = 1 / tan (x)
 
 a. True

20y5 times 2 is 1010 times -2 is -20, plus y

You are dumb you will drop out of high school