Cosine Calculator
Calculate cosine values for any angle. Supports degrees and radians with instant step-by-step solutions and secant results.
Cosine Calculator
Calculate cosine values for any angle. Supports degrees and radians with instant step-by-step solutions and secant results.
How to Use This Tool in 3 Steps
1
Input Angle
Type the numerical value of the angle you wish to analyze.
2
Choose Mode
Select whether your input is in Degrees or Radians for correct processing.
3
View Data
Check the main result, the steps of calculation, and the Secant value.
Frequently Asked Questions
Cosine represents the x-coordinate of a point on the unit circle or the Adjacent/Hypotenuse ratio in a right triangle.
The cosine of 90° (or À/2 radians] is exactly 0.
No, like sine, cosine values are always between -1 and 1 for real inputs.
Yes, cosine is an even function, meaning cos(x] = cos(-x].
It uses standard double-precision floating-point math, accurate to 15-17 significant digits.