Triangle calculator SAS

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

Obtuse scalene triangle.

Sides: a = 3.6   b = 2.5   c = 5.17985257276

Area: T = 4.07883850417
Perimeter: p = 11.27985257276
Semiperimeter: s = 5.63992628638

Angle ∠ A = α = 39.05334966494° = 39°3'13″ = 0.68216121009 rad
Angle ∠ B = β = 25.94765033506° = 25°56'47″ = 0.45328519128 rad
Angle ∠ C = γ = 115° = 2.00771286398 rad

Height: ha = 2.26657694676
Height: hb = 3.26327080333
Height: hc = 1.57551143303

Median: ma = 3.64660340585
Median: mb = 4.2810895275
Median: mc = 1.70331493834

Inradius: r = 0.72332124375
Circumradius: R = 2.85769354703

Vertex coordinates: A[5.17985257276; 0] B[0; 0] C[3.23771306502; 1.57551143303]
Centroid: CG[2.80552187926; 0.52550381101]
Coordinates of the circumscribed circle: U[2.58992628638; -1.20773931024]
Coordinates of the inscribed circle: I[3.13992628638; 0.72332124375]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 140.9476503351° = 140°56'47″ = 0.68216121009 rad
∠ B' = β' = 154.0533496649° = 154°3'13″ = 0.45328519128 rad
∠ C' = γ' = 65° = 2.00771286398 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     