MathCastle
TrigonometrySuperchallengeThe Unit Circle and Circular Functions

The Unit Circle and Circular Functions · Superchallenge problem

Simplify completely to a single function of θ\theta: sin⁡(−θ) cos⁡(−θ)tan⁡(−θ)\dfrac{\sin(-\theta)\,\cos(-\theta)}{\tan(-\theta)}.