Question

answe in step by step​

Answer 1

Answer:

$\tan \frac{\pi}{8} = \frac{22}{7} \times \frac{1}{8} \: \:(since \: \pi = \frac{22}{7}) \\ = \frac{11}{28} \\ </p><p></p><p>hence \: \tan \frac{\pi}{8} = \frac{11}{28}$

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Answer 2

Answer:

Power is generated at 24 kV at a generating plant located 56 km from a town that requires 55 MW of power at 12 kV.

Step-by-step explanation:

Two transmission lines from the plant to the town each have a resistance of 0.10 Ω/km. What should the output voltage of the transformer at the generating plant be for an overall transmission efficiency of 98.5%, assuming a perfect transformer?

Step-by-step explanation: