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Trigonometry literally means measuring the sides of a:
ATrajectory
BTriangle
CTrapezium
DTrisector
Answer & Solution
Correct answer: B. Triangle
1. The root trigon refers to a three sided figure.
2. The root metron refers to measuring.
3. Trigonometry means measuring the sides of a triangle.
4. So the answer is a triangle.
_Source: NCERT Class XI Mathematics, Ch 3 'Trigonometric Functions'_
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