Question #6103e Precalculus Graphs of Trigonometric Functions Graphing Sine and Cosine 1 Answer Ratnaker Mehta Sep 19, 2016 cos(90-theta)=sin theta=1. Answer link Related questions What is the y-intercept of the graph of y = sin x? What is the graph of y=sin (x/3)? What is the graph of y=sin(x+30)? What is the graph of y=sin(x-pi/4)? What is the graph of y=sin(x/2)? What is the amplitude of the graph of y = sin x? What is the range of the graph of y = sin x? What are the x-intercepts of the graph of y = cos x? What is the domain of the graph of y = cos x? What is the maximum value that the graph of y=cos x assumes? See all questions in Graphing Sine and Cosine Impact of this question 1642 views around the world You can reuse this answer Creative Commons License