##### Asked by: Moumen Zidaru

asked in category: General Last Updated: 24th March, 2020# Where is 0 on the unit circle?

**unit circle**is the

**circle**of radius one centered at the origin (

**0**,

**0**) in the Cartesian coordinate system in the Euclidean plane.

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Subsequently, one may also ask, where on the unit circle is sin 0?

**Unit Circle** — Radians We know that the cosine is equal to the x-coordinate, and the sine is equal to the y-coordinate, so we can write this: cos **0** ° = 1. **sin 0** ° = **0**.

Likewise, where did the unit circle originate? Where the center of the **circle is** the **origin** on a graph. The **unit circle** and trigonometry date back to the 2nd millennium BC to Egyptian mathematics and Babylonian mathematics.

Consequently, what is the sin at 0?

On the unit circle, the x-coordinate at each position is the cosine of the given angle, and the y-coordinate is the **sine**. For θ=0 , the rightmost point, the coordinate pair is (1, 0). The y-coordinate is 0, so sin(0)=0 .

What is the exact value of tan 0?

The **exact value of tan**(**0**) is **0** .