Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 40   b = 44.42   c = 59.78

Area: T = 888.4399990779
Perimeter: p = 144.2
Semiperimeter: s = 72.1

Angle ∠ A = α = 41.99991899834° = 41°59'57″ = 0.73330241484 rad
Angle ∠ B = β = 47.9932554884° = 47°59'33″ = 0.83876280992 rad
Angle ∠ C = γ = 90.00882551326° = 90°30″ = 1.5710940406 rad

Height: ha = 44.42199995389
Height: hb = 409.9999995848
Height: hc = 29.72223148471

Median: ma = 48.7177475304
Median: mb = 45.75552193744
Median: mc = 29.88657173245

Inradius: r = 12.32217751842
Circumradius: R = 29.89900003102

Vertex coordinates: A[59.78; 0] B[0; 0] C[26.76990866511; 29.72223148471]
Centroid: CG[28.85496955504; 9.90774382824]
Coordinates of the circumscribed circle: U[29.89; -0.00443065286]
Coordinates of the inscribed circle: I[27.68; 12.32217751842]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 138.0010810017° = 138°3″ = 0.73330241484 rad
∠ B' = β' = 132.0077445116° = 132°27″ = 0.83876280992 rad
∠ C' = γ' = 89.99217448674° = 89°59'30″ = 1.5710940406 rad

How did we calculate this triangle?

1. The triangle circumference is the sum of the lengths of its three sides 2. Semiperimeter of the triangle 3. The triangle area using Heron's formula 4. Calculate the heights of the triangle from its area. 5. Calculation of the inner angles of the triangle using a Law of Cosines     