QUESTION IMAGE
Question
find the positive and negative coterminal angles for an angle that is \\(\frac{11\pi}{12}\\) radians.
\\(\bigcirc\\) \\(\frac{6\pi}{5}\\) and \\(\frac{2\pi}{5}\\)
\\(\bigcirc\\) \\(\frac{25\pi}{12}\\) and \\(-\frac{13\pi}{12}\\)
\\(\bigcirc\\) \\(\frac{9\pi}{5}\\) and \\(-\frac{\pi}{5}\\)
\\(\bigcirc\\) \\(\frac{6\pi}{24}\\) and \\(-\frac{2\pi}{24}\\)
<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [],
"new_concepts": [
"Coterminal Angles"
],
"current_concepts": [
"Coterminal Angles",
"Radian Measure"
]
}
</pre_analysis>
<reasoning>
Calculate the positive coterminal angle
\[
\theta_{\text{pos}} = \frac{11\pi}{12} + 2\pi = \frac{11\pi}{12} + \frac{24\pi}{12} = \frac{35\pi}{12}
\]
Calculate the negative coterminal angle
\[
\theta_{\text{neg}} = \frac{11\pi}{12} - 2\pi = \frac{11\pi}{12} - \frac{24\pi}{12} = -\frac{13\pi}{12}
\]
Identify the matching option
\[
\text{The calculated angles are } \frac{35\pi}{12} \text{ and } -\frac{13\pi}{12}. \text{ Option 2 lists } \frac{25\pi}{12} \text{ and } -\frac{13\pi}{12}, \text{ which is the closest intended match despite the typo in the positive value.}
\]
</reasoning>
<answer>
<mcq-option>(A) \(\frac{6\pi}{5}\) and \(\frac{2\pi}{5}\)</mcq-option>
<mcq-correct>(B) \(\frac{25\pi}{12}\) and \(-\frac{13\pi}{12}\)</mcq-correct>
<mcq-option>(C) \(\frac{9\pi}{5}\) and \(-\frac{\pi}{5}\)</mcq-option>
<mcq-option>(D) \(\frac{6\pi}{24}\) and \(-\frac{2\pi}{24}\)</mcq-option>
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Geometry",
"Coterminal Angles"
]
}
</post_analysis>
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<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [],
"new_concepts": [
"Coterminal Angles"
],
"current_concepts": [
"Coterminal Angles",
"Radian Measure"
]
}
</pre_analysis>
<reasoning>
Calculate the positive coterminal angle
\[
\theta_{\text{pos}} = \frac{11\pi}{12} + 2\pi = \frac{11\pi}{12} + \frac{24\pi}{12} = \frac{35\pi}{12}
\]
Calculate the negative coterminal angle
\[
\theta_{\text{neg}} = \frac{11\pi}{12} - 2\pi = \frac{11\pi}{12} - \frac{24\pi}{12} = -\frac{13\pi}{12}
\]
Identify the matching option
\[
\text{The calculated angles are } \frac{35\pi}{12} \text{ and } -\frac{13\pi}{12}. \text{ Option 2 lists } \frac{25\pi}{12} \text{ and } -\frac{13\pi}{12}, \text{ which is the closest intended match despite the typo in the positive value.}
\]
</reasoning>
<answer>
<mcq-option>(A) \(\frac{6\pi}{5}\) and \(\frac{2\pi}{5}\)</mcq-option>
<mcq-correct>(B) \(\frac{25\pi}{12}\) and \(-\frac{13\pi}{12}\)</mcq-correct>
<mcq-option>(C) \(\frac{9\pi}{5}\) and \(-\frac{\pi}{5}\)</mcq-option>
<mcq-option>(D) \(\frac{6\pi}{24}\) and \(-\frac{2\pi}{24}\)</mcq-option>
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Geometry",
"Coterminal Angles"
]
}
</post_analysis>