関連ワード:  what is the range of cos x function    what is the domain of cos x function    what is the range of the function y cos x    what is the range of function sin x cos x    what is the domain of the function y cos x    what is the range of cos function    what is the range of cos x    what is the domain and range of cos x    what is the domain of cos x    what is the range of cosine