Calculator.cpu.com.cn - Your Calculator Resources Online!

Input one number then click "calculate" button!

A 30 60 90 right triangle or right-angled triangle is a triangle with angles 30 60 90.

Formulas of triangle with angle 30 60 90:

o perimeter = long side + short side + hypotenuse;
o area = 0.5 * long side * short side;
o long side = hypotenuse * 0.866025;
o long side = hypotenuse * sin(60);
o hypotenuse = long side * 1.1547;
o short side = hypotenuse * 0.5;
o short side = long side * cotangent(60) = 0.57735 * long side;
o hypotenuse = short side * 2;
o long side = short side * tangent(60) = 1.732051 * short side;

For example, When Short side a = 2, then the long side b = 3.464102, Hypotenuse c = 4, Area = 3.46102, perimeter = 9.464102.

For example, When Perimeter = 12, then the short side a = 2.535898, long side b = 4.392305, Hypotenuse c = 5.071797, Area = 5.569219.