Triangle calculator SAS

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

Obtuse scalene triangle.

Sides: a = 1.1   b = 1.3   c = 2.10113255568

Area: T = 0.60663543888
Perimeter: p = 4.50113255568
Semiperimeter: s = 2.25106627784

Angle ∠ A = α = 26.35552492346° = 26°21'19″ = 0.46599858743 rad
Angle ∠ B = β = 31.64547507654° = 31°38'41″ = 0.55223050918 rad
Angle ∠ C = γ = 122° = 2.12993016874 rad

Height: ha = 1.1022462525
Height: hb = 0.93328529058
Height: hc = 0.57771160845

Median: ma = 1.65883981874
Median: mb = 1.546605451
Median: mc = 0.58883092096

Inradius: r = 0.26994114794
Circumradius: R = 1.23989188575

Vertex coordinates: A[2.10113255568; 0] B[0; 0] C[0.93664491578; 0.57771160845]
Centroid: CG[1.01325915715; 0.19223720282]
Coordinates of the circumscribed circle: U[1.05106627784; -0.65765269694]
Coordinates of the inscribed circle: I[0.95106627784; 0.26994114794]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 153.6454750765° = 153°38'41″ = 0.46599858743 rad
∠ B' = β' = 148.3555249235° = 148°21'19″ = 0.55223050918 rad
∠ C' = γ' = 58° = 2.12993016874 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     