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plane trigonometry

noun

, Mathematics.
  1. the branch of trigonometry dealing with plane triangles.


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Word History and Origins

Origin of plane trigonometry1

First recorded in 1800–10

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Example Sentences

Plane trigonometry and its application to the solution of easy problems.

A kind of plane trigonometry had been known to the ancient Egyptians.

Plane trigonometry, including the solution of practical and useful problems.

The harbour plans and coast sheets are constructed on the simple principles of plane trigonometry by the surveying officers.

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