Question: what is the amplitude of a trig function?
Answer: Amplitude of Trigonometric Functions The amplitude of a trigonometric function is half the distance from the highest point of the curve to the bottom point of the curve: (Amplitude) = (Maximum) - (minimum) 2 . ... Similarly, the graph of y = cos ⁡ ( x ) y=\cos(x) y=cos(x) also has amplitude 1.