Sine Calculator

The calculator will calculate the sine of a given angle. In the calculator, you can use simple math operations like multiplication and use the word pi to write the number Pi. So you can write an angle of "two Pi" radians as 2pi.

What is the sine function

The sine of an angle in a right triangle is equal to the ratio of the length of the opposite branch to the length of the hypotenuse. Imagine this triangle:

Then the sine of the angle β is equal to

$$\sin(\alpha)=\frac{\mbox{ The length of the opposite branch }}{\mbox{ The length of the hypotenuse }}=\frac{b}{a}$$

See the article on goniometric functions for more details.