Use the Trigonometric Substitution U = a Csc θ,Where 0 $\sqrt { u ^ { 2 } - a ^ { 2 } }$

question 52

Multiple Choice

Use the trigonometric substitution u = a csc θ,where 0 < θ < π/2 and a > 0 to simplify the expression $\sqrt { u ^ { 2 } - a ^ { 2 } }$ . ​

• A)a tan θ
• B)- a cot θ
• C)a csc θ
• D)a cos θ
• E)a cot θ

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