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The line drawn from the eye of the observer to the object viewed is called
AThe horizontal line
BThe line of sight
CThe line of elevation
DThe perpendicular line
Answer & Solution
Correct answer: B. The line of sight
1. NCERT terminology: line of sight is the line from the eye to the observed object.
2. Horizontal line is the reference for measuring elevation/depression.
3. Hence the answer is line of sight.
_Source: NCERT Class 10 Mathematics, Ch 9 "Some Applications of Trigonometry", §9.2_
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