Why are the trigonometric functions sometimes called circular functions?

jazzcutie0h

jazzcutie0h

Answered question

2021-11-17

Why are the trigonometric functions sometimes called circular functions?

Answer & Explanation

mylouscrapza

mylouscrapza

Beginner2021-11-18Added 22 answers

Circular functions refer to trigonometric functions because their values may be represented in terms of a point's coordinates on a unit circle.
Because the lengths of circles' arcs influence the radian measurements of angles, these trignometric functions are also known as circular functions.
image

The coordinates of a point P on a circle of radius 1 are used to define the sine and cosine functions.
x=cosθ and y=sinθ.
Due to the fact that function values can be described in terms of coordinates of a point on a unit circle, trigonometric functions are also known as circular functions.

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