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)

Answer:

a. True