# Use sine ratio to calculate angels and side (Sin = $\frac{o}{h})$

### Use sine ratio to calculate angels and side (Sin = $\frac{o}{h})$

One of the trigonometric ratios is sine ratio. It is the opposite side over the hypotenuse of right triangles. In other words, we can find the angles and sides of right-angled triangles by using the sine ratios.