Based on the definition, \(\displaystyle{\sin{{t}}}\) is equivalent to y. \(\displaystyle{\cos{{t}}}\) is equivalent to x. \(\displaystyle{\tan{{t}}}\) is equivalent to \(\displaystyle\frac{{y}}{{x}}\).

The unknown terms are \(\displaystyle{x},{y},\frac{{y}}{{x}}\).

The unknown terms are \(\displaystyle{x},{y},\frac{{y}}{{x}}\).