Question

My question is about angle functions in programming languge Java. if i want to get sin of any double, i just use

double variable = Math.sin(x);

but what if sin(x) = 0.324 (or any other random number) and i want to calculate x? How can i do it? Are there any native function to this in java or i have to implement my own algorithm to return this value ?

getXForValue(0.324);

public double getXForValue(double val){
 // how to calculate ?
 return x;
}

Thanks.

Answer 1

What you are describing is known as the “arcsine” function. It’s available in Java as Math.asin().

You may want to read the wiki on trigonometric functions.