**Contents**show

## What is sin equal to in math?

In a right angled triangle, the sine of an angle is: The length of the side opposite the angle divided by the length of the hypotenuse. The abbreviation is **sin**. **sin θ = opposite / hypotenuse**.

## Is the value of sin 45?

The value of Sin 45 degree in decimal form is **0.7071067812**.

## Where does sin equal?

the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right triangle) **to the hypotenuse**.