Question

Write a function g that determine's the point's x-coordinate in terms t.g(t)=

Answer 1

Input data

Start at (-4, 0)

move circle centered at (0, 0)

angular speed = 2 rad/s

Procedure

The value of x is equal to the cosine of the swept angle time radius.

We can calculate the swept angle as 2*t

$g(t)=r\cdot\cos (2\cdot t)$