In Exercises 1-4, use the trigonometric substitution to write the algebraic expression as a trigonometric function of
Question:
1. √9 - x2, x = 3 cos Θ
2. √49 - x2, x = 7 sin Θ
3. √x2 - 4, x = 2 sec Θ
4. √9x2 + 25, 3x = 5 tan Θ
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