In Exercises 130 and 131, use the trigonometric substitution to write the algebraic

Chapter 7, Problem 131

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In Exercises 130 and 131, use the trigonometric substitution to write the algebraic expression as a trigonometric function of \(\theta\), where \(0\ <\ \theta\ <\ \pi/2\).

\(\sqrt{x^{2}-49},\ x=7 \sec \theta\)

Text Transcription:

theta

0 < theta < pi/2

sqrtx^2 -49, x=7 sec theta

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