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What is sin() in Dart?

Harris Amjad

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The sin() function in Dart

The sin() function in Dart returns the sine of a number. To be more specific, sin() returns the sine of a number in radians.

The illustration below shows the mathematical representation of the sin() function.

Mathematical representation of the sin() function
  • dart:math is required for this function.
  • The sin() function only works for right-angled triangles.

Syntax


double sin(double num)

Parameters

This function requires a number that represents an angle (in radians) as the parameter. In order to convert degrees to radians, use the following formula:


radians = degrees * ( pi / 180 )

Return value

sin() returns the sine of the number (in radians) that is sent as a parameter.

Code

import 'dart:convert';
import 'dart:math';
void main() {
//positive number in radians
print("The value of sin(2.3): ${sin(2.3)}");
// negative number in radians
print("The value of sin(-2.3): ${sin(-2.3)}");
//converting the degrees angle into radians and then applying sin()
// degrees = 90.0
// PI = 3.14159265
// result first converts degrees to radians then apply sin
double result=sin(90.0 * (pi / 180.0));
print("The value of sin(90.0 * (pi / 180.0)): ${result}");
}

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dart
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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