What kind of reflection does the trig function y = cos(4x/3 minus 1) have?

Well, it is reflected about the cosine zero line, or when 4x/3 minus 1 is equal to zero.

Amplitude of y=-2 cos1/3x

To determine the kind of reflection for the trig function y = cos(4x/3 - 1), we need to analyze the coefficient of the x-term within the parentheses.

In this case, the coefficient is 4/3. A negative coefficient indicates a reflection in the x-axis. Since the coefficient is positive (4/3), there is no reflection in the x-axis.

Therefore, the given trig function y = cos(4x/3 - 1) does not have any reflection.