Trigonometry
Write the following trigonometric expression in terms of sine and cosine. Express your answer in terms of xx only.
cotx⋅cscx\cot x\cdot\csc x
sin2xcosx\frac{\sin^2x}{\cos x}
cos2xsin2x\frac{\cos^2x}{\sin^2x}
cosxsinx\frac{\cos x}{\sin x}
cosxsin2x\frac{\cos x}{\sin^2x}