If $x = 2 \cot \theta$ , Use Trigonometric Substitution to Write

question 25

Multiple Choice

If $x = 2 \cot \theta$ , use trigonometric substitution to write $\sqrt { 4 + x ^ { 2 } }$ as a trigonometric function of $\theta$ , where $0 < \theta < \pi$ .

• A) \(2 \cos \theta\)
• B) \(2 \csc \theta\)
• C) \(2 \cot \theta\)
• D) \(2 \sec \theta\)
• E) \(2 \sin \theta\)

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