# How do you find the sine ratio?

Space and AstronomyThe definition of the sine ratio is **the ratio of the length of the opposite side divided by the length of the hypotenuse**. Well, the length of the side opposite ? C is the length of the hypotenuse, so sin ? C = ^{c}/_{c} = 1 Because ?

Contents:

## How do you find the sine and cosine ratio?

Video quote: *So for example the sine of let's say angle a here well the sine is a ratio of the opposite over the hypotenuse. So it would be the length of this side right here the opposite.*

## What is the sine ratio for?

Sine ratios in particular are the ratios of the length of the side opposite the angle they represent over the hypotenuse. Sine ratios are **useful in trigonometry when dealing with triangles and circles**. In a right triangle there exists special relationships between interior angles and the sides.

## How do you find the sine ratio of a triangle?

Video quote: *And the root 3 is like range of the middle it will be for the last one. So if you go ahead and do the 62 degrees right here for sine 60 you'll be doing the opposite. Take a look it's root 3.*

## What is the ratio for sine of theta?

If θ is one of the acute angles in a triangle, then the sine of theta is **the ratio of the opposite side to the hypotenuse**, the cosine is the ratio of the adjacent side to the hypotenuse, and the tangent is the ratio of the opposite side to the adjacent side.

## How do you find the trigonometric ratio of an angle?

**How to Find Trigonometric Ratios?**

- sin θ = Perpendicular/Hypotenuse.
- cos θ = Base/Hypotenuse.
- tan θ = Perpendicular/Base.
- sec θ = Hypotenuse/Base.
- cosec θ = Hypotenuse/Perpendicular.
- cot θ = Base/Perpendicular.

## How do you calculate sin by hand?

Video quote: *Value and the Y value corresponds to the sine value. So all I need to do here is is look at the Y value for sine of zero.*

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