AP EAMCET · Maths · Trigonometric Ratios & Identities
If \(\theta=\frac{\pi}{6}\) and \(x=\log \left[\cot \left(\frac{\pi}{4}+\theta\right)\right]\), then \(\sin h(x)=\)
- A \(\sqrt{3}\)
- B \(\frac{1}{\sqrt{3}}\)
- C \(-\sqrt{3}\)
- D \(-\frac{1}{\sqrt{3}}\)
Answer & Solution
Correct Answer
(C) \(-\sqrt{3}\)
Step-by-step Solution
Detailed explanation
\begin{aligned} & \text { At } \theta=\frac{\pi}{6}, x=\log \left[\cot \left(\frac{\pi}{4}+\theta\right)\right] \\ & \Rightarrow \quad x=\log \left[\cot \left(\frac{\pi}{4}+\frac{\pi}{6}\right)\right] \\ & \Rightarrow \quad e^x=\frac{\cot \pi / 4 \cot \pi / 6-1}{\cot \pi /…
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