Question

what is called classification ?​

Answer 1

Answer:

Before scientists started to base evolutionary studies more on genetics botanists and zoologists classified organisms into different categories based on their physical characteristics. This ordering of organisms into groups based on similarities and differences is called classification

Answer 2

Explanation:

Trigonometry, the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc).

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