Question

the sine ratio on the unit circle is equal to which of these values? (1 point)

$\bigcirc \sin\theta = x$

$\bigcirc \sin\theta = y$

$\bigcirc \sin\theta = \frac{x}{y}$

$\bigcirc \sin\theta = \frac{y}{x}$

Explanation:

Step1: Recall unit - circle definitions

On the unit circle \(x^{2}+y^{2}=1\). For a point \((x,y)\) on the unit circle corresponding to an angle \(\theta\) in standard position, \(\sin\theta=\frac{y}{r}\). Since \(r = 1\) (unit circle), \(\sin\theta=y\).

Answer:

\(\sin\theta = y\)