Triangle calculator SAS

Please enter two sides of the triangle and the included angle
°

Obtuse scalene triangle.

Sides: a = 73   b = 56   c = 121.3659710641

Area: T = 1313.85878742
Perimeter: p = 250.3659710641
Semiperimeter: s = 125.1879855321

Angle ∠ A = α = 22.74660914146° = 22°44'46″ = 0.39769941871 rad
Angle ∠ B = β = 17.25439085854° = 17°15'14″ = 0.30111375137 rad
Angle ∠ C = γ = 140° = 2.44334609528 rad

Height: ha = 35.99661061424
Height: hb = 46.92334955071
Height: hc = 21.6522290818

Median: ma = 87.17770593876
Median: mb = 96.1498789298
Median: mc = 23.46217807991

Inradius: r = 10.49657612456
Circumradius: R = 94.40110967328

Vertex coordinates: A[121.3659710641; 0] B[0; 0] C[69.71549790384; 21.6522290818]
Centroid: CG[63.69215632266; 7.21774302727]
Coordinates of the circumscribed circle: U[60.68798553207; -72.31554355765]
Coordinates of the inscribed circle: I[69.18798553207; 10.49657612456]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 157.2543908585° = 157°15'14″ = 0.39769941871 rad
∠ B' = β' = 162.7466091415° = 162°44'46″ = 0.30111375137 rad
∠ C' = γ' = 40° = 2.44334609528 rad

How did we calculate this triangle?

1. Calculation of the third side c of the triangle using a Law of Cosines Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. 2. The triangle circumference is the sum of the lengths of its three sides 3. Semiperimeter of the triangle 4. The triangle area using Heron's formula 5. Calculate the heights of the triangle from its area. 6. Calculation of the inner angles of the triangle using a Law of Cosines     