The displacement from equilibrium of an oscillating weight suspended by a spring is given by y(t) = 2 cos 6t, where y is the displacement in centimeters and t is the time in seconds. Find the displacement when t = 1.45, and round your answer to four decimal places if necessary.

Question

1.9770?

Answer 1

I get -1.4973
assuming the angle is in radians

If it is in degrees I get
1.9770

Answer 2

Since the displacement is in centimeters it probably is positive.