Cos Calculator
Calculate the cosine of an angle in degrees or radians.
How to Use
- Select the angle unit: Degrees or Radians.
- Enter the angle value.
- Click 'Calculate' to get the cosine value.
- Click 'Clear' to reset the calculator.
About Cosine (cos)
In trigonometry, the cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse in a right-angled triangle.
Formula
cos(θ) = Adjacent / Hypotenuse
Properties
The cosine function is periodic with a period of 2π (360°). Its value oscillates between -1 and 1. It is a shifted version of the sine function.
Common Values
- cos(0°) = 1
- cos(30°) ≈ 0.8660
- cos(45°) ≈ 0.7071
- cos(60°) = 0.5
- cos(90°) = 0
Applications
- Calculating horizontal components of vectors
- Waveform analysis and signal processing
- Structural engineering and architecture