# How do we calculate cos sin tan?

### How do we calculate cos sin tan?

sin (angle) = (side opposite the angle) divided by (hypotenuse). cos (angle) = (side adjacent to angle) divided by (hypotenuse). tan(angle) = (side opposite angle) divided by (side adjacent to angle).

### How to calculate the cosine and the sine of a real?

A. The cosine and sine of a number real α are respectively the abscissa and the ordinate of the point M associated with the real α on the trigonometric circle. (cos α)2 + (sin α)2 = 1. cos α ∈ [−1 ; 1] and sin α ∈ [−1 ; 1].

### How is the cosine calculated?

In a right-angled triangle, the cosine from an angle, denoted ” cos », is equal to the ratio (quotient) of the length of the side adjacent to this angle to the length of the hypotenuse.

### What is the cosine of 90 degrees?

cos 12° 0.978; cos 20° 0.94; cos 45° 0.707; cos 60° = 0.5 cos 90° = 0; cos 0° = 1.

### How to calculate the sine value?

The value of the sine in radians, degrees or pi (π) radians depending on the desired angle. Make another calculation by clicking on the “recalculate” option.

### How to calculate sine value?

This sine calculator functioned to automatically follow the sine equation and outputs the sine value at a glance for any angle. Its working procedure is explained below: Select degree, radian or (π) radian from the drop-down menu as you need Click the “calculate” button.

### How to calculate the angle of a sine?

If, on the contrary, you know the value of the sine and you want to find the value of an angle, you can use our arcsine calculator (ARCSIN), or inverse sine. opposite the angle and the hypotenuse.

### How to calculate trigonometric functions?

It is obtained by dividing the values ​​of the two. If you prefer, in this table you will find the sines and calculations of the main values ​​of an angle, in degrees as in radians. ? If you want to know more about the main trigonometric functions, you can click on the following links: