# How is the distance between the sun and earth calculated?

z = 149 million km

If you know how long it takes light from an object in space to reach Earth and vice versa, you can use the formula to find the object's distance from Earth.

where t is the time it takes light to reach Earth, z is the distance to the object, and c is the speed of light.

Since we already know that it takes 8.3 minutes for light from the Sun to reach Earth, the answer is 8 minutes and 19 seconds, or 499 seconds.

or

149 million kilometers is z.

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The distance between the Sun and Earth is calculated using various methods, including triangulation using radar, parallax measurements, and observations of planetary orbits. The most accurate method is radar ranging, which measures the time it takes for radio waves to travel between the Earth and a spacecraft or other celestial body near the Sun.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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