If $x = a(\cos \theta + \log \tan(\theta/2))$ and $y = a \sin \theta$, then $\frac{dy}{dx}$ equals
- A. $\cot \theta$
- B. $\tan \theta$
- C. $\sin \theta$
- D. $\cos \theta$
✅ Correct Answer: $\tan \theta$
Explanation
Differentiate parametric equations and divide $\frac{dy}{d\theta}$ by $\frac{dx}{d\theta}$ to get $\frac{dy}{dx} = \tan \theta$.
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