Using trigonometric substitution, what is A 1 6 sec-¹ (37) + √x²-9 2x² +C Ⓒ 3 sec ¹1( 3 ) + √x²³ - 9 B 6x² O 1 6 (5) sec √x²-9 2x² +C 3 Ⓒ = sec²¹ ( 5 ) - √ x ² = 0 + c +C 6x² ilm x²-9 √√x² X3 +C dx?

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