Trigonometric Comparison: Sine and Cosine

What is the Sine Ratio?

Sine of an angle $\theta$ in a right triangle is the ratio between the length of the opposite side and the hypotenuse.

\sin \theta = \frac{\text{opposite side}}{\text{hypotenuse}}

Angle	Sine Value $\sin \theta$	Decimal Value	Cosine Value $\cos \theta$	Decimal Value
$0^\circ$	$0$	$0$	$1$	$1$
$30^\circ$	$\frac{1}{2}$	$0.5$
$45^\circ$	$\frac{\sqrt{2}}{2}$
$60^\circ$	$\frac{\sqrt{3}}{2}$
$90^\circ$	$1$	$1$	$0$	$0$