 In this video we discussed the solution to question number 2 for practice exam number 2 for math 1060 In which case we're asked to find the amplitude of the graph y equals 1 plus 2 sine of 3x plus 4 When you're trying to find the amplitude of a trigonometric function like sine or cosine This amplitude is going to be the measurement of how much it's been vertically stretched Which you can see that as the coefficient that lives in front of the sine or cosine Therefore the amplitude of this sine wave is going to be choice B, which is 2