Question

give the introduction of trigonometry ​

Answer 1

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In simple words, trigonometry is the study of relationships between the sides and angles of a triangle. Trigonometry was used to find out the distances of the stars and planets from the Earth in the earlier days. In a right triangle, the ratio of sides can be represented as a trigonometric angle.

Answer 2

Answer:

its so long

Step-by-step explanation:

Trigonometry helps us find angles and distances, and is used a lot in science, engineering, video games, and more!

Right-Angled Triangle

The triangle of most interest is the right-angled triangle. The right angle is shown by the little box in the corner:

Adjacent: adjacent (next to) the angle θ

Opposite: opposite the angle θ

and the longest side is the Hypotenuse

( refer the 1st figure )

The main functions in trigonometry are Sine, Cosine and Tangent

They are simply one side of a right-angled triangle divided by another.

For example :

Functions   Abbreviation    Relationship to sides of a right triangle

Sine Function     sin              Opposite / Hypotenuse

Tangent Function     tan            Opposite / Adjacent

Cosine Function     cos               Adjacent / Hypotenuse

Cosecant Function   cosec            Hypotenuse / Opposite

Secant Function       sec               Hypotenuse / Adjacent

Cotangent Function   cot              Adjacent / Opposite

or the easy way to learn this is

OSH-ACH-OTA

O - Opposite          A - Adjacent         O - Opposite

S - Sin                     C - Cos                   T - Tan

H - Hypotenuse      H - Hypotenuse    A  - Adjacent

       hope u get it