Using this cosine calculator, you can simply calculate the cosine value of given angle theta.

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Cosine of angle is one among the three trigonometric ratios. The cosine of an angle **‘α**‘ is defined as the ratio between the adjacent side **‘b’** and the hypotenuse **‘c**‘.

**cos (α)= adjacent/ hypotenuse = b/c**

**Calculator Use**

- This calculator is simple and quick to use.
- To begin, input the angle value in the given field.
- You can enter the value in degree or radians. Make sure to select proper unit from the dropdown field.
- The calculator will display the cosine value of given angle throughout the rest of the process.

**Formula**

The formula to calculate the cosine of an angle is mentioned below: