MCQMathematics

MP Board · Class 11 · Mathematics · Trigonometric FunctionsConvert $\frac{11}{16}$ radians into degrees.

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Total Attempts: 4
Accuracy Rate: 25%
Step-by-Step Solution

We use the relation Degree measure = Radian measure $\times \frac{180}{\pi}$. Using $\pi = \frac{22}{7}$, we get $\frac{11}{16} \times \frac{180}{\pi} = \frac{11}{16} \times \frac{180 \times 7}{22} = \frac{315}{8}^{\circ} = 39\frac{3}{8}^{\circ}$. Since $\frac{3}{8}^{\circ} = \frac{3}{8} \times 60' = \frac{45}{2}' = 22\frac{1}{2}'$, and $\frac{1}{2}' = \frac{1}{2} \times 60'' = 30''$, the degree measure is $39^{\circ} 22' 30''$.

Detailed Options Breakdown
Option : $39^{\circ} 22' 30''$ (Correct Answer)

Correct choice. Refer to the step-by-step verified solution guidelines above for details.

Option 1: $39^{\circ} 20' 00''$

Incorrect choice. This distractor represents a common misunderstanding of the core principles of Trigonometric Functions.

Option 2: $40^{\circ} 12' 00''$

Incorrect choice. This distractor represents a common misunderstanding of the core principles of Trigonometric Functions.

Option 3: $38^{\circ} 30' 30''$

Incorrect choice. This distractor represents a common misunderstanding of the core principles of Trigonometric Functions.

💡 Study Guide: This question tests core syllabus concepts from Trigonometric Functions. For formulas, key summaries, and mock exam reference guides, read the full Trigonometric Functions Revision Notes.
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