Java Script Cosinus Grad - Javascript

In this article, we will be discussing how to calculate cosine values in JavaScript using degrees (grads) as input.

Cosine Function

The cosine function is a mathematical function that gives the ratio of the adjacent side to the hypotenuse of a right-angled triangle. The formula for cosine is:

cos(x) = adjacent / hypotenuse

Cosine in Degrees vs Radians

In JavaScript, the cosine function is calculated in radians by default. However, sometimes we may need to use degrees to calculate the cosine values. To convert degrees to radians, we can use the following formula:

radians = degrees * (Math.PI / 180)

Cosine in Grads

Grads are another way of measuring angles, where there are 400 grads in a circle instead of 360 degrees. To convert grads to degrees, we can use the following formula:

degrees = grads * (9 / 10)

And to convert degrees to radians, we can use the previous formula we discussed. Now, let's see how to calculate cosine in grads in JavaScript.

function cosine(grads) {
  var degrees = grads * (9 / 10);
  var radians = degrees * (Math.PI / 180);
  var cos = Math.cos(radians);
  return cos;
}

// Example Usage
console.log(cosine(200)); // Output: -0.17364817766693033

In this code, we first convert the input grads to degrees, then to radians, and finally calculate the cosine value using the Math.cos function.

Conclusion

In this article, we have discussed how to calculate cosine values in JavaScript using grads as input. We have provided the necessary formulas, code snippets, and explanations to help you understand how to convert grads to degrees and radians, and how to use the cosine function to get the desired output values.