How do you find a planet's obliquity?

Answer 1

By finding the latitudes at which the Sun pass through the zenith at the time of meridian crossing on the days of solstices.

If #\delta# is the obliquity of the axial tilt then on the day of northern solstice the Sun will pass through the zenith at the time of meridian crossing at geographical points whose latitude are #\delta#. All the points in the northern hemisphere lying at this latitude mark the northern tropical boundary. Similarly on the day of southern solstice the Sun will pass through the zenith at the time of meridian crossing at a geographical points whose latitudes are #-\delta#. All the points in the southern hemisphere lying at this latitude mark the southern tropical boundary.
On Earth which has an axial tilt of #23.44^o# the northern tropical boundary lies at #+23.44^o (23.44^oN)# and the southern tropical bondary lies at #-23.44^o (23.44^oS)#.
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Answer 2

To find a planet's obliquity, you measure the angle between its rotational axis and a line perpendicular to its orbital plane. This angle is called the obliquity or axial tilt. For Earth, this tilt is about 23.5 degrees. Other planets have different obliquities; for instance, Uranus has a very high obliquity of about 98 degrees.

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Answer from HIX Tutor

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.

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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