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DENIUS [597]
3 years ago
8

Find the length of the side labeled x. Round intermediate values to the nearest 10th. Use the rounded values to calculate the ne

xt value. Round your final answer to the nearest 10th

Mathematics
1 answer:
Otrada [13]3 years ago
6 0

Answer:

16.0(?)

Step-by-step explanation:

I’m not really sure if it’s correct. But I’m assume it’s correct.

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Taking x=7\tan\theta gives \mathrm dx=7\sec^2\theta\,\mathrm d\theta, so that the integral becomes

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=\displaystyle7^3\int\frac{\tan^3\theta\sec^3\theta}{\sec\theta}\,\mathrm d\theta
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and from here we can substitute u=\tan\theta to proceed from here.

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