Many authors and lecturers use the word approximate.

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SUMMARY

The discussion centers on the term "approximate" as used by authors and lecturers, emphasizing its mathematical implications. The definition of "approximate" is clarified, highlighting that it is acceptable to state that two quantities are approximately equal, with context providing clarity on the closeness of the approximation. An example provided is the value of sin(π/4), which is exactly sqrt(2)/2 and approximately 0.707, accurate to three decimal places.

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  • Understanding of mathematical terminology, specifically "approximation"
  • Familiarity with trigonometric functions, particularly sine
  • Basic knowledge of numerical accuracy and decimal representation
  • Ability to interpret mathematical expressions and their approximations
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  • Study trigonometric functions and their exact versus approximate values
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Students, educators, mathematicians, and anyone interested in the precise use of mathematical language and the concept of approximation in various fields.

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Many authors and lecturers use the word approximate.
It is not mathematically to say something is close to another...
I'm wondering what is the definition of approximate.
 
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See any dictionary for a definition of approximate.
There is usually nothing wrong with saying that two quantities are approximately equal, and the context will usually give you an idea of how close the approximation is. For example, the exact value of sin([itex]\pi/4[/itex]) is sqrt(2)/2, or approximately 0.707. This approximation is accurate to three decimal places.
 

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