2 years ago

Factorise: 4x(a4+x2)−a2−x2

Mathematics

1 answer:

inna [77]2 years ago

3 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

Let assume that Earth is a sphere, the following trigonometric diagram is constructed and presented below. The central angle is given by this inverse trigonometric equation:

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The distance of the portion of Earth that can be seen is:

$\Delta s = \frac{4.792^{\circ}}{360^{\circ}}\cdot (2\pi)\cdot (4000\,mi)$

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