find the area of a sector of a circle in typescript

To find the area of a sector of a circle in TypeScript, you need to know the radius of the circle and the central angle of the sector in radians. The formula for the area of a sector is:

index.ts
const radius: number = 5;
const centralAngle: number = (Math.PI / 180) * 60; // 60 degree central angle in radians

const area: number = 0.5 * radius ** 2 * centralAngle;
console.log(`The area of the sector is ${area.toFixed(2)} square units.`);
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In the example code above, the radius is set to 5 and the centralAngle is 60 degrees, which is converted to radians using the formula radians = (Math.PI / 180) * degrees. The area of the sector is calculated using the formula and printed to the console using console.log(). The toFixed() method is used to round the area to 2 decimal places.