The azimuth angle of a sun sight is always...

Question 1 / 2066636ee928f7522a1c5191de

Question 1 of 2066636ee928f7522a1c5191de

The azimuth angle of a sun sight is always measured from the __________.

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Question 1 of 20

66636ee928f7522a1c5191de

The azimuth angle of a sun sight is always measured from the __________.

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🔍 Key Concepts

• Azimuth (Zn) in celestial navigation is the bearing of a celestial body from the observer, measured clockwise from a reference direction • For a sun sight, the azimuth angle is linked to the observer’s true horizon and a specific reference meridian or vertical circle • Distinguish between reference directions used in navigation (like true north) and geometric circles on the celestial sphere (meridians, vertical circles)

💭 Think About

• Ask yourself: In practical marine navigation, when we write an azimuth like Zn = 135°, what is that 0° reference that we measure clockwise from? • Which of the answer choices represents a standard universal reference used for bearings on Earth, rather than a local circle that depends on the observer’s position? • Think about how you would plot a sun azimuth on a chart: what line or direction on the chart does it start from?

✅ Before You Answer

• Verify which option corresponds to the standard reference direction for bearings in navigation (0° point for azimuths) • Confirm that azimuths in sight reduction tables and plotting sheets are measured from this same reference everywhere on Earth • Eliminate any options that describe local vertical circles through the zenith, rather than a global meridian used for bearings

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Question 1 of 20

The azimuth angle of a sun sight is always measured from the __________.

first point of Aries

principal vertical circle

prime vertical circle

Greenwich meridian

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Question 1 / 2066636ee928f7522a1c5191de

Question 1 of 2066636ee928f7522a1c5191de

The azimuth angle of a sun sight is always measured from the __________.

Back

Question 1 of 20

66636ee928f7522a1c5191de

The azimuth angle of a sun sight is always measured from the __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed