Question

$\text{What is trigonometry?}$
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Answer 1

Answer:

trigonometrytrigonometry, 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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Answer 2

Imagine this, I have given you a triangle, but the only data I have given to you about the triangle are two of the sides and the angle in between them.

The triangle is unique (i.e. no other different triangles can be made with this same information), which we know by the SAS triangle congruency criterion.

How do we get to know what the third side of the triangle is? This is where Trignometry comes to play. Trigonometry helps us find the relations between the sides and angles of a triangle.